I walked in to work today to a shared office computer with my co-worker still logged on. Took a screen shot of the desktop, applied it as the desktop, hid the icons, hid and moved the taskbar. Should be a good one. Hopefully he figures it out because I don't want to get called at 3AM because he can't open up programs! Anyone have a good office prank to play on a co-worker? Or just pranks in general?