The Doobie Brothers are back in the limelight some 40 years after their debut.  The group, famous for such hits as "China Grove", "Black Water", and "Long Train Running" is releasing its first album since 2000's "Sibling Rivalry".  The rockers include founding guitarist Pat Simmons, founding vocalist Tom Johnson, drummer Michael Hossack, and multi-instrumentalist John McFee, and they were "surprised and amazed" that their new music, which they played at recent concerts, got such great response from fans.  As Simmons was quoted on a recent show, "There was a guy, maybe 18 years old, with his fist in the air and his head rocking.  Next to him was another guy, maybe 65 years old, doing the same thing.  In front of them was a woman taking her blouse off".  Looks like everyone still digs the Doobies.  The new album features guest shots by Willie Nelson and former Doobie Michael McDonald.