Co-workers are always a great topic of conversation. You never run out of things to say when it comes to talking about the different types of people you work with, what you love, what you hate and how you deal with it all.

We thought we'd do a little research into some of the best -- and worst -- co-workers out there. Not just the different personality types, but real people, who do real things -- good and bad.

What we found is that too many co-workers turn to violence when they're angry, and that perfume and high heels can be dangerous weapons. But we also found that many workers are generous, kind people who put their colleagues' lives before their own without hesitation.

Here are five of the worst co-workers people encountered this year.

On her first day on the job as an exotic dancer in Akron, Ohio, a 52-year-old woman was attacked by a co-worker, Chetania Davis, 22. Davis attacked her new colleague with a stiletto heel, repeatedly hitting her in the face with her heel as she walked into the dressing room, apparently because she didn't think the club needed more dancers. The victim received seven staples and Davis was sentenced to one year of probation. (MSNBC.com)

Two men working as subcontractors on a renovation project in Derby, Conn., got into an argument over a saw, with one accusing the other of taking it. Robert Espinosa, 33, allegedly hit Russell Cruz, his 43-year-old co-worker, over the head with the saw blade. Cruz suffered cuts to his head and was charged with breach of peace, while Espinoza was charged with second-degree assault and breach of peace. (The New Haven Register)

There's never a dull moment in some workplaces, especially when a stun gun is involved. Kathleen Bennett, a dancer at a club in Fort Worth, Texas, and Jennifer McReynolds, a waitressat the club, got into an argument one night at work. The manager of the club says he fired Bennett when she wouldn't calm down. After gathering her things, Bennett allegedly walked up to McReynolds from behind and shocked her with a stun gun. McReynolds went to fight back and allegedly was stunned two more times in the face. (CBS11TV.com)

Two employees of Metro Bis, a restaurant in Simsbury, Conn., got into a fight one evening that ended with one employee in the hospital and the other charged with attempted murder. No one seems to know what the argument was about because there were no witnesses; the only confirmed detail is that the victim was stabbed in the stomach with a large kitchen knife. (NBC Connecticut)

Sean Tremblay, an employee at a tire shop in Salt Lake City, was charged with felony aggravated assault after allegedly getting into a fight with a co-worker. During the argument, Tremblay allegedly held a co-worker by the neck with a pair of pliers and struck him with a pneumatic air tool. (KSL.com)