Shameless has run on Channel 4 over here for a couple of years now, and yeah, it is quite funny...
The first season or two starred James McAvoy who has gone on to make it on the big screen - Last King of Scotland and Atonement are among his credits.
The series began to repeat itself dring midrun, but has picked up again lately.
The main character, Frank Gallagher, head of the dysfunctional family, plays a professional drinker and layabout, is a well respected Shakespearean actor, tho i have to say he plays Frank to a tee.
More here -
http://www.channel4.com/entertainment/tv/microsites/S/shameless/index.html
How far along are the episodes/series on Sundance?