Sweet... Another Motowner. I got my 1st class about a month ago in Clarksburg with Doc Hess (the older, as his son is also in practice with him). It was relativly painless. The nurse checked my vision and other vitals and then the doc came in and did a pretty normal physical. If you want more info about it PM me.
If you don't have any major health problems (diabetes, asthma, heart murmurs, etc.) then 1st class is no problem. There's less to it than a standard physical given by a regular physician, with the addition of some eye tests.