Starting tomorrow, Friday, February 28th, Future Shop will be selling iTunes gift cards at 15% off. If you buy apps, music, books, movies on the iTunes/App Store, this is pretty much free money.
Applies to gift cards of $50 or more. So, buy $50 worth for $42.50 or $100 worth for $85 — not bad. I've seen 20% off several times in the past, but not in the past few months.