Niccol nails the delivery of the film's premise (as well as its beautifully bleak style), but falters when it comes to the subplots. Hawke's relationship with Uma Thurman offers little of interest or reason, and the murder mystery that sets the stage for the rest of the film culminates in an unsatisfying resolution, partially playing off a previously introduced subplot with Hawke's brother that doesn't quite gel. It's strange, then, that even though many of the pieces that compose GATTACA are somewhat average, the film as a whole is still generally fascinating, constantly being propelled by its underlying premise, superb filmmaking, and solid acting. So as long as you're hooked by the movie early on, the rest of it shouldn't be able to deter you.
Deleted Scenes (10:44): There are six scenes, and most of them are actually worth watching (which is a rarity nowadays).
Welcome to Gattaca (21:57): A new making-of featurette, with all of the standard interviews and such. However, writer/director Andrew Niccol is absent, which is a major bummer.
Do Not Alter (14:50): Narrated by Gore Vidal, this featurette explores many of the film's themes and questions.
Substance Test (0:35): A very funny outtake.
Original Featurette (6:51): A vintage 1997 making-of, which is essentially just a publicity piece.
Also included are Previews.