The Canon lens and flash rebates that were scheduled to end on July 11th, 2009 have been EXTENDED to August 8th!
See:
http://www.usa.canon.com/app/pdf/Promotions/Lens_rebate_MayAug09.pdf
There are some great rebates, like $200 off an EF 70-200mm f/2.8 L IS USM zoom.    Also the Speedlight 580EXII has a $50 instant rebate!  Check out all the great deals, and if you’re [...]

Make sure you check out the rebates from Canon!  These end July 11, 2009!
You can save $200 off the 70-200 f/2.8 L IS lens (one of my personal favorites)!
http://www.usa.canon.com/consumer/controller?act=PromotionsAct