I've gotten a request for Oreo cake... I was thinking that I'd do a vanilla cake with crushed Oreos in it. Does that work? Any tips or recipes to try? Also, I'd like a good chocolate filling of some sort, maybe a ganache, that will hold up to South Florida temperatures. It is only going to be a small (8in round), fairly simple cake but any decorating ideas would be appreciated.

Do you mean a cake that is oreo flavored? Or a cake that looks like an oreo? If you search 'oreo' in the photo galleries, quite a few cakes come up.

Some of the best:
http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=2747

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1073853

Good Recipe on this site:
http://www.cakecentral.com/cake_recipe-373-22-Oreo-Cookie-Cake-II.html

check the forum titled "Help!! Gourmet Flavors|" That forum is awesome. There are tons of ideas on caming up with new flavors. You could check there or heres an idea. Chocolate cake with Bettercream filling with chopped oreos mixed in. If you cant do bettercream whipped cream filling with oreos would be AWESOME but you would have to refridgerate it but since its a small cake no problemo. Let me know what you decide and how it turns out.