We're glad you asked! There is a suggestion board up at Scoops or you can leave suggestions on this blog. Let your imagination run wild. Generally, Tai Kim (the flavormaster) combines two, maybe three flavors maximum together.
For example, you could take Obama's Hawaiian background into account: Guava Pineapple sorbet. Or you could suggest a flavor inspired by John McCain. Pork and Prunes, anyone?
For those of you who have never been to Scoops, it is right next door to LA City College on Heliotrope, just north of Melrose Avenue. The Address is: 712 N. Heliotrope Drive, Los Angeles, CA 90029
More info and a map: