In "Man of Science, Man of Faith" when Locke warns Jack not to touch the computer he says "I wouldn't do that". In the next episode, "Adrift", when Kate watches the scene, he says "I wouldn't do that, Jack."
At the start of the episode, Desmond puts spaces between each number he inputs into the computer. When Locke enters the numbers later in the episode he does not put spaces and the computer automatically puts them in.
When Desmond plays the song "Make Your Own Kind Of Music" by Cass Elliot, he does so by playing an album (not single), starting it on the first/outside track (we cannot tell which side). In its album release, however, the song is the listed as the 12th and last song on the album of the same name, making it the innermost track on side B.