WE BEAT UPN! 25 years ago tonight, on Sunday, April 5, 1987, the Fox network aired its first primetime programs--an hour block of Married With Children and The Tracey Ullman Show, with 21 Jump Street following a week later. It was another 6 years till Fox programmed every night of the week (starting in the fall of 1993), and despite hits like The Simpsons and 90210, Fox didn't really go legit until it got the rights to the NFC in 1994, and didn't become a dominant force until American Idol and Joe Millionaire dominated the 2002-2003 season. Fox has given us a lot of programming--some memorably good, some memorably bad, and some memorably ridiculous--share your favorites in the comments.
ETA: Vulture has a nice slideshow of 25 shows it's safe to say Fox won't be featuring on its upcoming 25th Anniversary special.