

Admittedly, I haven't watched that many American television shows (if you don't count ones that are decades old). But from what I have seen, British television tends to be much better quality. Also, it seems to me that a lot of American shows are never-ending (cough Psych cough). Granted, my favorite TV show right now is Doctor Who, which has been going on for almost 50 years, but at least they have a good excuse to keep going. In my opinion, a lot of American shows just keep going because they're making money, not because the story demands it, which is a horrible reason. In general, I've found that the British shows that I've watched have a lot more depth to them, even if (or perhaps because) they're written for younger audiences. Let's take two shows that I've watched most of: Psych and Doctor Who. I actually got into Psych long before Doctor Who, and it is (or was) a pretty decent show. It's very funny, has interesting characters, and cool mysteries. However, it's just gotten way too drawn out, and it feels like the characters have been stuck in a rut for the past couple seasons, forcing the writers to do drastic things like (spoilers) finally allowing Shawn and Juliet to get back together and shooting Henry at the end of the season. It's good that they're finally getting on with the overall plot, but what happened to the energy of the first few seasons? It feels like its slowly draining away, and I'm losing interest. It looks like they're trying to fix this in the seventh season by actually adding some more overall plot, but I think it might be too late. They should really end it before it loses all of its appeal.
Doctor Who, on the other hand, keeps going strong. By changing the characters and the show itself so often it stays fresh even when they're using old monsters from decades ago. It has a really good balance between the stories of the individual episodes and the overall plot, which helps it stay unified and exciting through each season. Doctor Who also has a depth to it that comes out strongly in some episodes and is more subtle in others. The writers aren't scared to have a slower episode every once in a while to focus on character development, which in my opinion is essential for the audience to feel like the show is going somewhere. I'm someone who only really likes something when I can relate to the characters, so the characters have to be progressing in order for me to feel like the show is progressing.
While Psych and Doctor Who are only examples of British and American TV, I think they are fairly good representations of typical British and American shows and they reflect their respective cultures well. Not to say British culture is better than American culture, but it does look better on television. Perhaps its just the appeal of the exotic, but British TV is just so much more interesting and it feels more like you're actually learning something about life instead of just wasting your time with TV (but that's a whole other discussion).