For $20 you can fill out an Oscar Pool ballot, which will cover 24 categories. At the end of the night (or maybe Monday morning, depending on how much fun we've had) we'll announce the winner, who will take home a percentage of the cash!
Head to the Oscar website and have a look at the nominees: http://oscar.go.com/nominations/nominees.
You can also look at a ballot here: http://oscar.go.com/media/2010/pdf/OSCAR_BALLOT.pdf
Happy Hunting!