The CW calls this "a re-imagining" of the older series.
Jen (to Pacey): "Oh, fine. Roswell's on in five minutes anyways. You just let me know when you wanna do it, and I'll do it too."
Brady imparts Marcy he is guesting on Roswell.
Jay refers to the series.
Vince mentions it in the bar
In the opening sequence where the Observer douses his sandwich with a mountain of pepper, jalapenos, and most importantly Tabasco sauce, it would appear to almost certainly be an homage to the alien eating habits in the Roswell series.
Owner of pick place mentions this television show by name
Emma describes Baze's "type" as looking like that girl from "Roswell".
Frank mentions fans sending the network hot sauce to help save the show
Mike (Nicholas Brendon) says that he starred in the series for four years.
Dina tells Diane she didn't steal her DVDs of this show
The fan campaign for Roswell gets an honorable mention.
Roswell gets an honorable mention.
Roswell is #10.