Happy to come out of retirement for this list!
My personal un-favorites...
Mr. Smith: an orangutan drinks a special formula and develops a really high IQ, including the ability to talk, play chess, and work for the government. I think he's still at the SEC.
V: A great miniseries was actually a pilot for a television series that was just too expensive to produce. So they decided to film a sequel-miniseries to wrap up all the loose ends. With all the loose ends wrapped up, NBC decided NOW was a good time to authorize a series, with half the actors, half the budget, half the scenes recycled and none of the suspense that made the original so much fun.
Condo: A white family is dismayed that they bought an expensive condo right next door to a Puerto Rican family.
Misfits of Science: a bunch of teens with unscientific abilities, including the ability to read that dialogue with a straight face.
Galactica 1980: Turns out getting there was ALL the fun. You know a show is doomed when it's named after the present year. I mean, if the show lasted until 1981, would they have had to rename it?
The New Odd Couple: Actually, the Old Odd Couple's scripts, read by new black actors.
Emeril: The pain! The pain! Make it go away!!!
Teletubbies: Please! Bring back Emeril!!!
Second Chance: This was really bad. Matthew Perry starred as the teenage version of a 40-something-year-old man who dies and comes back to the past to set himself on the right path.
The Tortelli's: Frasier may be the most intelligent series spinoff ever. The Tortelli's, spun-off from the same series (Cheers) may have been the worst.
Top of the Heap: Another really bad one. This was a spin-off of Married with Children (!) and starred Matt Le Blanc.
For those keeping track, we have THREE "Friends" stars covered (Courtney Cox was in Misfits of Science).
Ah, that was fun. Okay, back to retirement.
The Living Epistles Society