Don't know if anyone here has noted it, but "Frank Nelson" occasionally makes an appearance on The Simpsons. Dan Castellaneta does the voice in a not-bad impression, and he's the same old ill-mannered, rude store clerk or waiter.
There are really no shows doing "Benny" type absurdist humor on TV anymore - the last I can really think of would be "Green Acres" - but The Simpsons - brilliant in its own style - does have its occasional moments even though it tends much more toward irony and satire. It's a loving tribute to have "Frank" still asking "Yeeees?" amidst the voices of Springfield so many decades later. Cool.