Photo Gallery: Office and computer pranks

TechRepublic reports: "What better way to welcome back coworkers from an extended vacation than an amusing practical joke? Whether you enjoy the simple elegance of filling someone's cubical with balloons, appreciate the effort required to cover an office with tin foil, or the comedic brilliance of growing grass on a keyboard, this gallery photo gallery will tickle your funny bone and keep you looking over your shoulder? You'll be glad these office pranksters didn't target you."