LIVE with Kelly and Mark Season 21 Vin Diesel, guest co-host Nick Lachey Season 21, episode 155 Vin Diesel, guest co-host Nick Lachey April 3, 2009 43 min Previous episode Marg Helgenberger, “Dancing with the Stars” castoffs Steve Wozniak and Holly Madison Next episode Emeril Lagasse, the Rebirth Brass Band, New Orleans Hornet Chris Paul, “American Idol” castoff Megan Joy