One of the best shows to come out of Williams Street
^
The humor in Harvey Birdman comes in the form of superhero parody, ridiculous quips, quirky running gags, random silliness, prat falls, and all sorts of hilarity in between. The richness of the writing and voice acting gave a slight distinction of cleverness that I have not seen in other Williams Street shows.
SG:CtC was much of the same humor but a completely different format so I won't bother comparing the two. ATHF came close to matching Harvey Birdman's caliber but I feel that it leans much more heavily on absurdity than anything else. Venture Brothers meets (and surpasses, in my opinion) Harvey Birdman's humor more often than not, but the series creators have relatively little to do with Williams Street.