I'm a huge fan of criminal forensics and when CSI first came out I jumped at the chance to watch a new take on the usual murder/mysteries shows. This isn't Columbo or Murder She Wrote - the clues are in DNA or some shoe impression, or even a piece of lint (maybe I'm exaggerating).
But still, the show has lasted this long because of the intriguing stories, great ensemble cast and the way they mix in science without making it boring.
Favorite Character: Gil Grissom
Favorite Episode: Grave Danger (season 5)