My iPod Won't Turn Off
My iPod won't shut off. Holding down the Play button does nothing. It just won't turn off. A quick Google reveals that this isn't exactly a new thing, and comes up with several articles that explain how to fix it: reboot the thing.
How do you reboot an iPod? Well, Apple has the answer. Toggle the Hold switch to Hold and then back off again, and then hold down Menu and Select (the center button) for six to ten seconds, until the Apple logo appears. The Apple logo displays while the iPod is booting.
That fixed it. Yay.
You can tell if your iPod won't turn off (beyond the obvious "why the frak won't holding Play shut it off?!") when it remains at the menu after being docked with iTunes - assuming Disk Mode isn't active.
Update: Making sure to remove the headphones before rebooting it. There may be a really loud "snapping" sound as it reboots. Ow.
Update 2009-11-12: Should it ever come up, you can reboot the iPhone/iPod Touch by pressing and holding the Home and Lock buttons for 5-10 seconds. I haven't had these refuse to shut off (mainly because they never shut off, instead they suspend) but I have managed to crash my iPhone.