Bertie and the Impossible Crossovers...?

[iambic5.livejournal.com]

So.
I dashed off this ficlet in response to a post at pornandkittens, and it occurred to me that some of you might like to see it. It's a crossover with Dr. Horrible's Sing-Along Blog. No, really. It's Billy/Bertie, and if that mental image doesn't make your head implode from the cute then you are made of stronger stuff than I.
( Warning: contains pointless, gratuitously impossible smut. )

Well, this got me thinking about other impossible crossovers I'd be far too excited to see/write. Discworld? You know Jeeves and Vetinari would get along like a house on fire. Firefly? I dare you to imagine the crew's reactions to Bertie and not laugh. Dinotopia! So many odd fashions for Bertie to adopt (and for Jeeves to object to)! House! The madness!

Er, I mean, ahem. *shifty eyes* Got a bit carried away there. But seriously, what impossible crossovers would you like to see? Let's write them!