Adobe's 50% off Adobe Creative Suite CS5.5 Production Premium [$849.50 instead of $1,699] or Adobe Premiere Pro CS5.5 [$399.50 instead of $799] for Final Cut Pro and Avid Media Composer Users is supposed to end October 31st [originally September 30th, but they added a month! -Ed]. So if you're thinking about it, there's only a few more weeks to take advantage!
Creative Suite 5.5 Production Premium - License [Add the Full version to the cart, then in the cart, click on the "Click here to enter a promo code." text just below the details and enter "SWITCH" and the discount is applied]