The Punisher. Hey, if he can do a crossover with Archie, Buffy should be a piece of cake.
They already did this. I think they called it a turok-han.
No brilliant suggestions here, but I’d like to say that this gave me a good laugh. Especially the Dale Cooper bit.
Oh, yeah, this is for Intaglio: [geek]I really don’t want to see Dina Meyer (sp?) as Artemis. Artie should be spookier lookin’.[/geek]
This might be stretching the definition of “fictional character” (among other things), but the one I’d most like to see Buffy take on is Rocco Sifreddi. Or possibly Jeff Stryker . . .
The Six Million Dollar Man—I’d like to see an (aging) Steve Austin kick some Undead butt.
Batman– Not the movie or comic book version, but the campy old TV version. Dragging his fat stomach into supernatural dangers he is oblivious to, Buffy is forced to save him throughout the episode.
Kolchack The Night Stalker–kickin’ it old school!
The Loch Ness Monster–Buffy shoots on location! Lots o’ wetsuit action. Buffy in a two-piece. Scratch that–a thong.
Buffy vs. The Incredible Hulk–the TV version. A.K.A–Buffy gets splattered.
Me. That is Cthulhu and assorted mythos creatures would be interesting. See Buffy killing Deep Ones, or what happens if she ran into a shoggoth.
I also think Elektra would be cool.
OK, that would be awesome. Hands down winner for me, so far, especially given the cast of the recent movie. 
I’d give my husband’s left testicle to see Q from ST: TNG test the Scoobie Gang.
I want that so bad, I’m tempted to write a fanfic to make it happen.
John Constantine would be a great addition to the Buffyverse. (Tim Hunter as well, though I’ve read a lot less Books of Magic than I have Hellblazer.) Considering the very similar backgrounds they share, it wouldn’t be surprising to learn to two hung out together in the 70’s during the height of their hellraising youth.
In many ways they’re the same character (or at least same type of character) but circumstances have conspired to lead them down very different paths to adulthood. John Constantine is what Giles might have become without the guiding influence of the Watcher’s Council and vice-versa. It’d be interesting to follow them both as young men, and later as adults catching up on old times while fighting new evils.
Also, the Endless messing around in Sunnydale would be cool. The Cheese Man would make a great addition to the cast of The Dreaming.
Also Doctor Doom, just because it would be funny to watch him destroy Buffy and pals. Doom would laugh at what Buffy considers her worst enemies. He’d make the First Evil wet its pants.
“You dare pose as my mother, foolish thing? For that, Doom will crush you!”
Batman, to out-brood Angel.
The Ambiguously Gay Duo.
“What is everyone looking at?”
"Nothing!"
I’d like to see an R&B sensation like Ashanti guest star on Buffy. Oh wait…
The Scoobs have been there and done that in Christopher Golden’s book The Wisdom Of War. I liked that one. Faith is in there. Yum.
Back on topic, I want to see Joel on Buffy! Sorry, pepper, that’s a kitten joke
But seriously, I want to see a Trading Spaces ep of Buffy. I have dreams about Joss doing a TS short and hiding it on a DVD set in the future.
Rodan