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There has been no shortage of terrible TV-show spin-offs over the years. Remember Joey, which followed the least interesting character on Friends? How about Joanie Loves Chachi? The surfeit of awful derivative series make it that much more depressing when a spin-off we really, really want to happen never makes it past the pilot stage. After the jump, we take a look at 10 spin-offs that sounded promising but never made it to primetime. Tell us which ones you’d add in the comments.

Ripper (a spin-off of Buffy the Vampire Slayer)

It says something that there is an entire Wikipedia page devoted to “Undeveloped Buffy the Vampire Slayer Spin-Offs.” At one point, there was an animated series in the works, as well as shows about Buffy’s vampire-slayer rival, Faith, and another about a school for slayers, based on a story line from Buffy‘s final season. But we were always most excited about Ripper, a spin-off starring one of our two favorite characters, Rupert Giles. (The other, obviously, is Willow.) Conceived as a BBC miniseries, it would have followed Buffy’s learned watcher through his lonely years of occult experimentation in Britain, in what would amount to a new spin on a classic genre: the English ghost story. Although all sorts of obstacles have emerged to thwart Ripper, from Whedon’s Dollhouse responsibilities to the difficulty of securing character right for the BBC, it also seems that no one has ever conclusively stated that it’s off the table.