It seems there are a few categories being disscussed. I will cover them fully
Ugly Stupid = Hell no
Ugly Average = No
Ugly Friggin Genius = Friends
Average Stupid = Hell No
Average Average = Depends how average in each case.
Average Friggin Genius = Definietly.
Beautiful Stupid = Hell no
Beautiful Average = Yes
Beautiful Friggin Genius = Definetly
In short, I will never date a stupid person because I just can't prevent myself from stabbing them. And I don't date ugly people because, if we're going to be honest, I don't find them attractive and humans are kind of shallow. As long as the woman in question though is neither stupid or ugly, I'd consider it.
Picking relations by category though is inherently flawed. I know an example of a beautiful genius girl like the kind refferenced above and I wouldn't date her, for reasons that have nothing to do with either category in question.
In short, I advocate examining each potential girlfriend on a case by case basis.
EDIT: Sorry about that Easykill. I ain't one.