One of the most annoying things about gaming on a mobile device (yes, we understand this is an absurd complaint) is trying to control classic games with any kind of precision. It’s pretty hard to time a jump correctly when you’re using a "virtual joystick" that only kind of works. Well, now ThinkGeek has stepped in with the "iCade 8-Bitty" which will also tug at your old-school Nintendo heartstrings …