Game of Life HD, $6.99. (iPhone and iPod Touch versions available).
When your life is on hold -- waiting for your ride or sitting on a long flight -- it's hard to beat the digital version of this classic board game. Have a career, get married, have babies and make a pile of money, all before you have to put your seat backs and tray tables in the upright and locked position.
Best detail: The spinner sounds just like the real thing!