Oh, I don't know. There issue with the US is that since Hollywood and the surrounding area is the entertainment capital of the world, you get all sorts of stuff produced. Although not a favorite of mine, a sitcom like "Everyone Loves Raymond" elevates self-depreciation comedy to British like levels. Look to individual characters within shows like Seinfeld. I would stack comedies like "Scrubs" against anything else for sheer subtle humor. Or a show like "Chuck" (on the cult status side) or even "Big Bang Theory" (on the popular side) or "Arrested Development" (in between both) for packing in more pop culture references that any other. There are a whole plethora of shows from the 80's/90's like Gary Shandling Show, or Herman's Head, or whatever. It's just that you also get things like Two and a half Men, the Three Stooges and what not as well, but these are the definitive examples of what is available. Relating back to the universal focus of Hollywood, I think the issue is more along the lines that the US doesn't really have a signature area. A British show is very characteristically British. But US networks do things all over the place without confines.