Taxi was my favorite TV series of all time. I have enjoyed a lot of cable series of late, such as The Sopranos, Rome, Deadwood, and most recently Spartacus.
I finished watching the first year of Spartacus: Blood and Sand, and had a great time. I almost gave up on it during the first episode, but it got better. Sure, the graphics are a bit cheap and the blood is over done, but the story and acting make up for it.
I'm now watching the prequel 6 episode series. The second full season will be without the lead actor since he is still suffering from non-Hodgkin's Lymphoma.