I have a calico colored cat who descended from a mix of an Egyptian mau/tabby and an unknown cat, and she's pretty...mild, as far as cats go. The cat she descended from, the mau/tabby mix, had some pretty weird behavior - she would make all sorts of weird sound effects to accompany all her movements and she would like to carry used bandages around in her mouth. No idea why.
Personally I like snowshoes, they're somewhat dumb but very affectionate, I used to have one of them and he was a pretty good cat.