Most of my bosses have been good (or at least tolerable) people, but I've got a couple of bad boss tales nonetheless.
I got laid off in the post-9/11 economic downturn, and it took six months to find another job. This was at a small PR firm here in Dallas. The owner was the cheapest jackass I've ever met. My first day, I sit down at my desk and power on my computer. The monitor's picture shook and quivered, to the point I had a searing headache after five minutes. I asked for a new one, which he didn't like hearing, and as there were no extra monitors around, we'd have to buy one. Couldn't just go to the store and get it, though. It had to be bought on ebay. To save money. And I'd have to buy it myself, because he wouldn't give PayPal his credit card info. I should have known at the time, but after six months, was just glad to have a job. When my keyboard went bad (several keys quit working and couldn't be fixed), same story. Couldn't buy a $25 keyboard at the Office Depot 200 yards away. Had to buy one on ebay for $10 and wait for it to arrive. This is in a job which required a very large amount of writing. This boss prided himself on never paying unemployment for anyone he fired, and when he let me go after a year and change (he'd lost some accounts and decided to fire two people for it, including me, who had nothing to do with those accounts), I found out why. He told the TWC I was a thief, that I went to client meetings and either fell asleep or insulted the clients, that I never did my work, so forth and so on. Even went so far as to retain a lawyer for the eventual hearing. Useless cheapskate jackass.
My other bad boss actually was a thief. During college, I spent two summers working as a guide at a hunting camp in Mexico. A lot of our income as guides came from tips, and the camp director instituted a policy of pooling tips to share out equally. Abruptly, we were all getting less money, and it didn't take long to realize he was skimming a big chunk of it off the top. We weren't sure how to handle it, but it quit being a problem before long. Rumor is he was also embezzling from the camp itself. One of the primary owners of the camp was friends with the commander of the state police. One morning, I woke up about 3:30 and saw the director being marched out of his quarters and into a police car. Don't know for sure what happened to him (it was August and I left to come back to school a couple weeks later). I just know he wasn't there the next summer and I got to keep all my tips.