I really, really enjoyed Graham Roumieu's very short, very funny, very strange book of doodles titled 101 Ways to Kill Your Boss. Because it can be read through in about fifteen minutes, I'd highly advise taking it along to work and perusing it while you eat your lunch. Plus, what boss isn't going to be a little more careful around you if they see a book with that title on your desk?
Do check it out. Some of the comics are hilarious, some are weird, and some are deeply disturbing. (Okay, they're all deeply disturbing.) My favorite? The one where an employee has just decapitated his boss into a file cabinet drawer marked "Heads." The librarian in me thrills to the classification and neatness of the solution.