5 Best Co-Workers of 2009

Rachel Zupek, CareerBuilder.com writer

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, what we also found is that many workers out there are generous, kind people who put their colleagues' lives before their own without hesitation.

Here are 10 of the most heroic -- and rogue -- co-workers people encountered this year.