This is a couple years old in internet time, but this is my favorite promotion in the history of sports. The Nets' "10 gets you 10!" promo pack gives 8 games (10 if you count match-ups against the Knicks and Clippers) and 5 of the greatest reversible jerseys of all time.
I'm a pretty big NBA fan, which means I watched almost every playoff game and waited in line for 6 hours to get tickets to the NBA Draft. But I still had no idea who #22 on the Nets was. According to their roster (oddly sponsored by Haier) it's Jarvis Hayes, who averaged 8.7 points for the Nets last year. He's also now my favorite Net since his jersey is one half of the Lebron James jersey included in the package.
There are also these new Portland jerseys which are amazing and hideous at the same time. They are right behind Brandon Jennings' 3 Milwaukee jerseys on my list of "Authentic jerseys I talk about buying every day but will never actually buy."