Snoop Dogg, Charlie Hill, OK Go

In honor of the show's 13th anniversary, an intern accidentally walks onstage to ask Dave to sign his own greeting card; live from Tracy, California, Ron Patrick drives around in a silver 2000 Volkwagen Bug with a 1,450-horsepower jet engine; Dave tries to interpret Snoop Dogg's "dizzle"-speak; OK Go performed "Here It Goes Again."