Everyone knows that finding the right people is hard, and that hiring one bad person can ruin the business. I know I'm knew to the forum, but I wanted to share a tactic I use for every hire.
When I meet with a potential hire for the first time, I have him write down contact information for references/former employers. I then tell them that at the end of the interview, I will ask them to call or set up a call with the reference. It's a super easy way to make sure every word that comes out of their mouth is the truth.