i am fascinated by british tv shows now --- "coupling" --- best show ever. i laugh to tears when i watch any episode.
i used to watch a lot of amercian tv shows. Top off my head, of course ,"friends", it's relatively easy to understand compared with other shows . "heroes", "two and a half men", "desperate housewives", "smallville", "one tree hill", "ugly betty", "the o.c", i also like "apprentice" ... oh my god, there are so many. :) in those shows about teenagers, or younger people, people speak faster, and that's good for practise listerning.