Comic-con 2011?????????????

Is Joss Whedon going to comic-con 2011???? Also Jhonen Vasquez, or Camilla Derrico? I saw her last year but didn't know who she was. Also Joss Whedon walked right by me and I didn't notice TT.TT also, what about James Marsters? I got his autograph but forgot it at the hotel..... I know, total fail. But I wanted to redeem myself this year. Are any of these people going? thanks in advance