Just a quick note on some iTunes cards sales. Best Buy currently has $50 cards on sale for $40 (20% off) as listed in their weekly flyer for May 11-17th.
Also, Rexall Drugs locations (at least those in Ontario) also have discounts on iTunes cards, a $25 card for $20 but requires a coupon. iTunes cards periodically go on sale across numerous retailers in Canada.
As always, you can use these cards for music, TV, movies and both the App Store and Mac App Store. With the recent release of Adobe Photoshop Lightroom 4 in the Mac App Store ($149.99), you can load up on these cards and save 20 percent off your purchase!
Thanks to @swotam for the heads up!