Mine were pretty much the definition of family drama... there was always the "I'm not going there if SHE's gonna be there" and if we did manage to get most of us in one place at one time, there would always be someone who sits the meal out cause they're miffed...
I never really had the drunken uncle, but my sister's guest (whoever it was at the time) would always seem to provide the after-dinner entertainment... Like the girl who refused wine at dinner, 'cause she was pregnant (by my sister's boyfriend) and concerned for the welfare of the baby, who then proceeded to drain the nitrous oxide out of all the whipped cream cans after dinner, cause she "really needed a quick high"
(the post-dessert catfight between my sister and her was the subject of several years worth of holiday conversation, mind you)
yeah, I usually avoid the big family get-togethers...