Yeah, it doesn't get any better than Arrested Development, and I do mean that literally. I must have watched all the seasons at least 6 or 7 times each, and I'm still catching new jokes.
It makes me feel sick when people say that Scrubs or Seinfeld are better.
If you need proof of its greatness; http://www.imdb.com/title/tt0367279/ I think its the highest rated TV show on IMDB, or at least it was, last time I checked.
Edit: Actually, it might be the highest rated anything with a decent amount of votes.