Researchers at Manchester University, among others, have discovered a mathematical formula for calculating the "beer goggles effect" (where people look more attractive after a few beers).
The factors are: how drunk you are, how dark the room is, your eye-sight, the amount of smoke in the air, and how far you are from your "target" (which also explains all those "good from far but far from good" sightings).
"Don't try to outweird me, three-eyes. I get stranger things than you free with my breakfast cereal." - Zaphod Beeblebrox in "Hithiker's Guide to the Galaxy"