...at least since The Simpsons went off the deep end about three years ago...
3 years?
I've found it unwatchable for at least 7, and I used to love the show. The deal was pretty much sealed when they had like 3 anti-Iraq war episodes in a row, and the matter was treated snidely like Keith Olbermann might treat it, and not cleverly like may have been done in the 90s.