(CareerBuilder.com) -- 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 co-workers out there. Not just the different personality types, but real people, who do real good things. 

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

Here are 5 of the most heroic co-workers people encountered this year. 

The heroes 

1. Co-worker helps to save a fellow employee's life 

Claude Marlowe, a diabetic, went to work one morning like any other day. When he went to shake a colleague's hand, he had a heart attack and dropped dead -- literally. 

That's when Debi Coffman and another co-worker, Larry Garrett, realized that this wasn't a diabetic episode; Marlowe had no pulse. The two performed CPR and chest compressions and revived Marlowe three times before emergency crews arrived. He suffered five heart attacks and was brain dead for at least two hours. He would not be alive had his co-workers not known what to do. (Nascar.com) 

2. Chandler worker helps colleague get new artificial leg 

For 30 years, Gregory Lewis, a retail maintenance worker, walked with the same prosthetic device on his left leg. As the years wore on, so did his artificial leg. One day, he lifted his foot off the ground to get into his car, and the artificial leg fell off. 
Who is the second one about?
2. Chandler worker helps colleague get new artificial leg 
