This could be a regular series, a mini series, or a TV movie.
My list includes:
- Watchtower/Chole spinoff of Smallvile
- Bobby and Rufus mini series from Supernatural
- Castiel series spinoff from supernatural
A LOST spinoff featuring Sawyer and Miles as cops as shown in the alternate reality would actually be really good, and a spinoff featuring any Friday Night Lights character could be pretty great.
I'd also be interested in the Hurley and Linus spin-off with them looking after the island. That ten minute epilogue wasn't enough for me.
I want to see more of Dale Cooper, but Kyle MacLachlan is getting up there and I don't know about the idea of anyone else playing him. But you know what? I would love to see him as old-man cooper. Twin Peaks did have an aged cooper sequence, so it's possible they could tie it into that.