I don't think I need any fancy introduction here, this is pretty self explanatory. As with all lists this isn't meant to be any sort of definitive "best" list, just my 10 favorites. And I have decided to limit myself to only one per show, otherwise half the list might be from Star Trek: The Next Generation.
review of it a while back, the premise was that this guy claimed he was the Greek God Cupic who had been punished by Zeus had been banished to Earth and stripped of his powers until he can set up 100 couples in true love. He ended up in a nut house due to these claims and ended up released under the supervision of his doctor/potential love interest under the name Trevor Hale, a name he apparently made up to get out of the looney bin. The show only ran for a year back in 1998 before it's untimely cancellation but I still remember it very fondly. Maybe my opinion is colored by how I think this show never got a fair shake, but I loved Jeremy Piven's portrayal of this character. The show was never explicit as to whether this guy was who he said he was or just a lunatic, albeit a charming and brilliant one. This character was something of a Rorschach test, you could see him either way depending on what you wished to see and that really stuck with me as something kinda unique for a network show.
So there you have it, my 10 favorite TV characters. Disagree? Well then, go make your own damn list.