I was playing with my Apple iPod Touch today and I had to do a reset (or reboot). Not a hard reset that wipes out all the info, but just a simple reboot. Do you know how to reset an iPod touch? There's no small button to press with a paperclip. There's no battery to remove to reboot.
You have to hold the center Home button and the power button at the top (also called the Sleep/Wake button) for ten seconds.