My personal list thus far;

Buffy with the following

Supernatural
Doctor Who
Torchwood.

I know, not much, but I just got into crossovers.

I use to try to find decent crossovers of Charmed/Buffy, but since Charmed has no decent fic at all, it was hard.

Now I'm more into the idea of Buffy/Doctor Who, by the way, did you get to read the one I sent you twinlet?

I love anything that crosses over Buffy and Supernatural, and I've found quite a few good fics out there.

I also love the idea of Veronica Mars and Buffy crossovers.

As far as couples go.. well, I have a few that I like the idea of. Dean from Supernatural and Faith from Buffy, Brooke from One Tree Hill and Michael from Prison Break (because poor Brooke needs a good man), and almost anything concerning Angel.. from Angel.

I'm a little new to them myself, but I love that the possibilities are seemingly endless.

Right now I am writing 3 they are Faith/Acheron, Faith/Jasper, and Faith/Sam/Dean...I know, sensing a pattern here right? Where do you two post? I write on tthfanfic.org penname FaithSummers.

I love my chris pine and blake lively crossover !! its the first ever :D I'v made 3 crossover videos and some photo manipulations :D would love it if you guys check out my fan club :D