Gee when haven't they sold out?
Sonic in Super Smash Bros, Mario and Sonic london tour, Sonic cart racing games (why does sonic need a go-kart?), etc, etc, etc.
You're a loving friend if you can't enjoy Sonic.
That's an understatement. Sonic haven't had any new games lately since they went 3D. Clearly they should go back to standard 2D side scrolling.