DWAYNE ""THE ROCK"" JOHNSON (""Be Cool"") stuffs his face when Ellen flies in his favorite dessert. VANESSA MARCIL (""Las Vegas"") surprises her co-star James Caan by calling him at home. Never have we received so many emails about a guest! So, Ellen calls to check in with 10 year-old cancer survivor DAVID DINGMAN-GROVER and takes a look at his backstage photos with KISS! .