The Beach Boys performed a medley of their hits &quot;California Girls,&quot; &quot;Kokomo&quot; and &quot;Fun, Fun, Fun.&quot; Honorary band member John Stamos (&quot;ER,&quot; &quot;Full House&quot;) sat in with the band on guitar and drums. They were accompanied on the stage by professional &quot;Dancing with the Stars&quot; dancers Louis Van Amstel, Anna Trebunskya, Maksim Chmerkovskiy, Cheryl Burke, Damian Whitewood and Ashly Costa. The Beach Boys are led by original band member Mike Love and long time performer Bruce Johnston, along with Christian Love, Scott Totten, Randell Kirsch, John Cowsill and Tim Bonhomme. Photo: Getty Images