post some pics of your garage

run pipe from your compressor (you do have one, right?) to several quick connects around the garage. This is something I have always wanted/needed to do. Also, epoxy paint really makes a nice finish for the floor, and the stuff they have out now is supposed to last for a while. You can even add grit to the paint so it isn't slippery.

a definite must is a two post lift, hehe. either a lift or a nice grease pit, but I would go with the lift.

A deep sink maybe even a half bathroom would be cool as well, so you don't have to get the house messy.

how many bays are you planning?