Revealing mistakes: Position of the stuffed dog relative to the door - it is impossible for Ace to have placed the fake dog in the position it is shown due to the direction the door opens in.
Audio/visual unsynchronized: At the end of the scene where Snowflake is kidnapped, the get-a-way van squeals/spins its tires with a sound as if the van was on concrete. There is only grass on the stadium field.
Continuity: Aguado's arm positions while at the murder scene.
Continuity: The football players carrying Dan Marino off the commercial shoot swap positions.
Continuity: Einhorn and Ace switch positions near the end of the murder scene.
Continuity: In the end scene at the football match when Melissa and Ace start kissing their backs are to the audience in the football stands and Melissa is on Ace's right side. In the next shot she is to the left of him and they are now facing the audience in the stands and then in the next shot she is back on the right side. But there was definitely not enough time to change to these positions.
Continuity: When the dog lays down on the picture of Ray Finkel, making it look like Ray had long hair, the "hair" was down past his shoulder. In the close-up, it is by his chin.
Continuity: The condition of the box that Ace rips after he steps on the bubble wrap, and the subsequent position of the bubble wrap.
Continuity: Before Snowflake's kidnapper puts his (her?) hand in the pool, the 1984 AFC Championship Ring is on the middle finger; afterward it's on the ring finger.
Continuity: When Mr. Shickadance inspects Ace's apartment for animals, the doggy door on the fridge is a solid sheet of plastic, but when Ace calls his animals out afterward, the penguins exit through the doggy door which is clearly segmented.
Continuity: The stain on Rodger Podactor's shirt changes from when he initially meets Ace to when he walks over to the dolphin tank.
Continuity: Ace's hand gets dirty when he is looking through the tank's filter and turns spotless when it shows the diamond in his hand.
Continuity: When Ace enters the outside door near the pool at Ronald Camp's home, a large plant can clearly been seen in the hallway opposite the doorway. When he slams the door, the plant is gone.
Factual errors: When Woodstock says he is sending new coordinates to the Norwegian whaling fleet, the blips on the radar screen move even when the beam is not sweeping over them.
Continuity: After Snowflake is captured, Melissa asks "Why did it have to happen now, two weeks before the Superbowl?" In a following scene with Ace, Melissa tells him that it's Superbowl week, and the dolphin was stolen "last night".
Factual errors: The band Cannibal Corpse is falsely credited as "Canibal Corpses" in the end credits.
Errors in geography: In the movie, the Miami City Police officers are wearing Miami-Dade Police Patches. The real-life Miami City Police patches are circular and feature a palm tree in the center.
Factual errors: The film mentions the 1985 Super Bowl as "Super Bowl XVII (17)" It was not. It was Super Bowl XIX (19). Super Bowl 17 was held on 30 January 1983. (This might stem from the fact that the 1969 Super Bowl between the Colts and the Jets was the first to actually be referred to as the "Super Bowl" . The previous two Super Bowls were actually called The AFL-NFL World Championship Game.)
Factual errors: Both Miami Dolphin team pictures that Ace references throughout the movie are said to be from the 1984 season. Both of these team photos were taken at Joe Robbie Stadium...but in reality, Joe Robbie Stadium wasn't built yet! The Dolphins were still located at The Orange Bowl in 1984.
Continuity: When we first see Finkle's room, it's an inside shot and it's completely dark. But when we see the rest of the room, there is a "shrine" to Marino, with candles already lit.
Continuity: When Ace is fighting with Einhorn/Finkle at the end of the film, she is clearly wearing pantyhose. A short time later, when Ace removes her skirt, she is not wearing pantyhose.
Factual errors: Ray Finkle is said to have played football for Stetson University and graduated in 1980. In fact, Stetson University has not fielded a football team since 1960.
Continuity: While in Melissa's backyard, Ace at one point spits out a lemon wedge from a glass of iced tea; when he gets up from his chair, the lemon is back on the glass.
Miscellaneous: There are several spelling errors in the newspaper articles Ventura and Melissa view on microfilm, including "origionally", "Finkle'" with an apostrophe instead of a comma, "stiil", "itys" (its), "disasterous", and "Champioship". The articles also use the same filler material (usually when it's near the edge of the screen): a football-related paragraph once the relevant information is done, and occasionally completely unrelated copy that seems to have come from another article.
Continuity: After Ace rescues the lost Shih Tzu, his car windows are smashed. In the scene after as he takes the dog/cat food to his apartment, the windows are no longer smashed. When he arrives at the Miami Dolphin's stadium, his windows are messed up again.
Continuity: At the end during the "Super Bowl" once Ace brings Dan to the game. After kissing Melissa, Ace looks over at the water coolers to see the pigeon up for the big reward. In the background of that shot you see a couple ushers including a bearded one. The next shot is back on Ace and Melissa and now the bearded usher is standing behind them.
Continuity: When Ace enters the storage room of the asylum and searches through Ray Finkle's box of belongings he picks up 2 knitted doilies that say "Die Dan" on them with the diamond shaped one being in his left hand and the octagonal one being in his right. In the very next shot they are reversed
Continuity: When Mr. Shickadance confronts Ace about the rent, Ace hands him a sheet of paper. During the closeup shot of the paper, Ace's shirt has changed.
Continuity: In the film that runs in Ray's room showing the missed field goal, the ball sails wide right (looking from behind the goal posts). When the camera cuts to the shot of the referee in the end zone, he gestures with his hands that the ball went wide left.
Continuity: When Ace is about to kick the package down the hall to the man's doorstep at the beginning of the movie, he throws the package up with his feet and lands flat, but on the scene he kicks it, it's in a vertical position.
Continuity: When Ace is breaking into the Private Room in the Asylum, he picks the lock with the 'Private' door tag. Once he is inside and the cleaner opens the door it appears to be unlocked.
Factual errors: Ace refers to Super XXVII (17) as the game that Finkle blew by Marino having the laces out. The Dolphins did lose Super Bowl 17, but it was one year before Marino's rookie season in the NFL. Dan Marino only played in Super Bowl 19 with the Dolphins.
Anachronisms: The file photo of Ray Finkle has an NFL patch on the collar. That was added to uniforms many years after 1984 when it was supposed to have been taken.
Continuity: When the penguins come out of the freezer, the clear flap has been cut into strips, but when it is shown again, it is solid.
Factual errors: Ace claims Finkle graduated from Stetson University, holding 2 Division 1 records. Stetson is not a Division 1 football school.
Plot holes: At the end after Ace has ripped off Einhorn's skirt, Dan Marino is the one who points out what's obviously in the back of her underwear. However, the numerous police officers who are also directly behind Einhorn act as though they see nothing.
Revealing mistakes: When Ace is in the mental hospital acting as Larry, he suddenly stops to do his half-time dance and then slams his head and face into the bench in the hallway. When he does this, you can see the doctor break character and start laughing.
Revealing mistakes: When Ace breaks into the storage room using the Private sign the type of jamb indicates it is an out-swing door yet the door swings in. You can see the jamb is in the way and the lock cannot be picked in the manner he did that in the shots before and after the close up of him breaking in.