A Brentwood man uses his skills as a dentist to dramatically change the lives of L-A's homeless population. The sound of a drill makes most people squirm...but it's music to the ears of thousands of homeless people who've been helped by Dr. Jay Grossman. Dr. Grossman came up with an idea 15 years ago when he realized giving a dollar to a homeless vet on the street corner wasn't going to make a difference. He called his idea "Homeless-not-Toothless"...and it's grown into a huge program that helps homeless people regain their self-respect by *not* having agonizing tooth pain and...more importantly...having a full and bright smile.Dr. Grossman tells me it's his way of giving back to the community.