'The Simpsons' to 'House': FOX's 25 best and most important shows of the last 25 years

A cult favorite for its first three seasons, then just a plain old hit after its unlikely return to FOX in 2005, "Family Guy" is the centerpiece of the Seth MacFarlane animation empire that now makes up most of the network's Sunday-night lineup. It was also an early and hugely important example of how passionate fans can keep a show going.