Didn't care for Uk's Shameless even though it was very popular so never tried the US version, do mean to give ours another go though. Started back in 2004 here. Those titles I listed aren't all my cup of tea though. Try the League of Gentlemen and I'm Alan Partridge. Modern Birttish comedy at it's finest. Spaced, Black books, The Mighty Boosh. Brass Eye, The IT Crowd, all modern British Masterpieces.
