If you are a student (or support one), RIM has a back to school promotion going on with a contest with a grand prize of up to $50,000! There are also a number of other prizes. You can read more details here: BlackBerry - Students
Here's the prizes:
# 1 Grand Prize of $50,000
# 3 First Prizes of $10,000
# 20 Second Prizes of $1,000