How I Met Your Mother is in season seven and is dying a painful death. The Office is in season eight and is essentially AfterMASH at this point. Sitcoms simply aren’t designed to last more than four or five years. Even historic greats like Cheers and Seinfeld struggled mightily in later seasons. It’s no surprise that Arrested Development is my favorite sitcom of all time — it never had a chance to decline.
So how the fuck is It’s Always Sunny in Philadelphia chugging right along, and possibly putting together its finest season, in this its seventh year?