Just in case you needed a handy, dandy easy to read chart during this holiday season.
EDIT: I got this from IFLS (I Fucking Love Science), but it has been mentioned that this may have been created by a GTer. Is this true? PLEASE COME FORWARD SO THAT WE MAY LAUD YOUR GENIUS!
(Thanks Rokokobang for the heads up!)
EDIT THE SECOND: This particular design was done by GT user ParanoidShiksaFeminsta!