salted caramel is A+; i really love the ones that have pretzel bits in them. in a similar vein, i also really like the chocolate ice cream with mini m&m's in it. i don't have it very often but it's a nice treat!
my favorite ice cream flavor though is definitely coffee! to be completely honest, i'm not even one of those coffee enthusiast types of people. i take my coffee with a bit of cream and rarely ever much else. coffee flavored ice cream, however, is just a gift from the gods. my other two favorite flavors are chocolate chip cookie dough and cookies & cream.