I loved Heroes S1 (and would definitely recommend it), and could have done without S2. Some other great recommends for tv seasons (from a range of genres) are Firefly (just 1 season, really fun show), the Wire (if youre lookin for something longer, i think there are 5 seasons or so, all great except s2, which is only so-so), the new Dr Who's (really fun, wacky sci-fi), and Generation Kill (a brilliant 7 part series recently aired on HBO, though youll have to rely on torrents or on-demand, as it just finished).

um, yeah... i watch too much tv