Dave Grohl -- Secret of the Hidden Valley

Foo Fighter Dave Grohl was thrilled TMZ finally "discovered the Valley" -- and good thing we did, because Dave's hilarious and his little "Obama" shouting daughter Violet is beyond adorable.
Dave Grohl: Click to watch
For the record, "The Valley" is the area located on the "other" side of the Hollywood Hills -- and not in the third circle of hell -- where the producers of "Entourage" have probably led you to believe it's located.