Iphones killer app for creative types has arrived and it's called Kern. Like "Tetris for typenerds" you have to place a missing letter into the exact right spot of a falling word avoiding any unnecessary ligatures as you play. If that hasn't got you all exited yet, they throw in kern-puns for good measure, headlining the app intro: SPACE, THE FINAL FONT TIER. Bless!
More game nerdery: These guys show off by analysing the gravity variations in Mario games. I can honestly say those are the geekiest graphs I've seen in my life.