One time, my computer(RIP) was in sleep mode. I looked at it and imagined me turning on my computer. The next thing I know, my computer wakes up from sleep mode. :o
My current computer is really awkward when it comes to sleep mode.
Ever since I got my new cooling system for my processor, it has a problem where, after you put it in sleep mode, it shuts down the hard drives and all that, but all the fans stay running, including the one on the front of my computer, which lights up.
And, before I had build 7100 of Windows 7 on here, my computer could only stay asleep for 20 minutes before turning back on. It'd turn back on by itself.