Canon is offering pretty substantial rebates on its popular pro/prosumer camcorders. The Canon XH A1, XH G1, GL2, and XL2 all feature mail-in rebates between $250 and $500. As long as it is purchased between now and June 30, 2007, from an authorized Canon dealer (say, for instance, the venerable Amazon.com) you will be eligible. Just download and print the rebate PDF and send it in for your money. Here are the different rebates available and the link to the rebates themselves:

Canon XH A1 - $250
Canon XH G1 - $500
Canon GL2 - $250
Canon XL2 - $300

Link