Say what you will about the story lines on Baywatch, but the show made money. After NBC canceled it, the Hoff-fest went on to become the most popular show on Earth. Oops. Check out this and other major mistakes on TV Guide Network's hourlong special, 25 Biggest TV Blunders, airing Sunday at 8/7c.

Dawson's Creek is just one of many shows that lost tension a-plenty when its lead characters hooked up.

Who are we to say how television icon Lucille Ball should enjoy her golden years? We just wish she hadn't spent them doing slapstick jokes that made us fear for her safety.

For years, viewers pleaded for a remake of the '70s classic Bionic Woman. Wait, no they didn't. The short-lived revamp was one of a slew of unnecessary do-overs.

Were viewers of Felicity so loyal to the title character's locks that they abandoned their allegiance to the show just because she got a haircut? Yes.

Viewers tuned into the weekly exploits of the Conners to see normal people deal with the same kinds of family and financial troubles as the rest of us — until they won a big ol' pile of money and suddenly became not very much like us at all.

Things were going just great for Project Runway until it switched networks and settings in the same season. Don't worry, bitter, jaded New Yorkers: Your show has come home from L.A.

The Brady kids had a nice little thing going until their cousin showed up for no reason. Now his name is shorthand for every too-cute, extra character.

Memo to any actor who thinks his hit show couldn't possibly go on without him: Yes it can. David Caruso's departure from NYPD Blue is only one of the premature exits that proves it.

Happy Days spun off the highly successful Laverne and Shirley and Mork and Mindy. But Joanie Loves Chachi paid dearly for its hubristic attempt to abandon the [Proper Noun] and [Proper Noun] naming protocol.

One thing that makes game shows really entertaining is when they aren't rigged. Get with the program, 1950s.

Not much has been written about this, but NBC once moved Tonight Show host Jay Leno to prime time, a silly experiment that turned out not to work.

The court fights and speculation over Janet Jackson's semi-exposed ta-ta continues to this day. One question: If she never expected to be exposed, why was she wearing that scary star-shaped thing over her nipple? Does she do that all the time, just in case? Which blunder was the biggest? Find out on 25 Biggest TV Blunders, airing Sunday at 8/7c on TV Guide Network.