I'm becoming a fan of Alex Jamieson's recipes. For this party I made a double batch of Black Bean and Sweet Potato Chili from her Detox Diet book. It's got lots of lime, a hint of cocoa and nice texture with the sweet potato (well, I used what we call yams).
Fantastic mint chocolate cupcakes from VCTOTW - I think they were a hit. Very minty, you better like that combo if you ever go for these. Argh, terrible photo. I suppose I'll just have to make them again to get a better shot.