A key thing to get, if you paid your last semesters tuition in 2004, is the lifetime learning tax credit. It'll get you $2000 (maybe more this year.)
You can also deduct student loan interest that capitalized, EVEN IF YOU DIDN"T PAY IT! (Although I can't remember if you can do both of the above at the same time.)
As far as expenses are concerned, I'm deducting for my License, DEA number, FCVS fees, and a board review course and the associated travel as well as a few miscellaneous costs.