Full time grad school, two part time jobs. Paid for undergrad school, grad school, car, books, utilities, food, misc living expenses, computer, rent, insurence, ect. myself. Got a Roth IRA I rolled over from a 401K I had while co-oping and contributed 3k into it this last tax year, a Sharebuilder account for DRIP investing, a Scottrade account for value investing, and an ING Direct account to earn 2% interest on cash I haven't found a good place to invest yet, but is not emergency cash. Also managing to keep around 7k/month in my main checking account for emergencies, bills, and quick buy and resale opprotunities. Would have had a lot more, but stuff happens in life sometimes that sucks.
Oh and anyone who says that you have to spend all or almost all your pay cheque to have fun in college are smoking crack.