Bullet time was used before in video clips, for the Matrix it was the first time in a movie. So like most of the The Matrix, it's not VERY original.
I'm not into sci-fi because of it being sci-fi myself. I like good stories, whether it's in space or not. I used to watch ST and Blake's 7 when I was a kid. There wasn't much else to feed on sci-fi stuff then. Now I hardly ever watch any series. Films I like: 2001, Dune, SW, Planet of the Apes (looking forard to the new one), First Contact, Dark City, Escape from New York (if you count that as sci-fi that is) and a couple of others I can't think of right now.