To start off with.
Buffy the Vampire Slayer http://xeon.mine.nu:2070/migitis/episodes.htm
Enterprise http://trekker.ru/enterprise/episodes.shtml
Ali G Episodes http://www.lando.co.uk/
A list of loads of Shows, (Angel, Friends, Spiderman) http://www.topsites.uklinux.net/pages/
The best source is as always alt.binaries.multimedia where you can usually find US showings posted 24-48 hours after airing.
Will add more when I come across them.
Social Networking Bookmarks