The 5-minute favor was coined by Adam Rifkin, who supposedly has more connections on LinkedIn to the most influential people in the world than anyone else.
The concept is simple. You should be willing to do something that will take 5 minutes or less for anybody. Givers get good karma. It also just feels great.
So, I'm putting it out there to you. What 5-minute favors do you need? I'll try to help!