Jack Black joined the Ghost Girls cast, creators, and producers for an interesting afternoon of interviews. He sat down at our press table to discuss the series that is launching in the fall on Yahoo! Screen. Ghost Ghirls is a comedy series that follows the antics of paranormal investigators Angelica (Maria) and Heidi (Amanda). You may recognize a few of the guest stars: Jack Black, Dave Grohl, Val Kilmer, Jason Schwartzman, Kyle Gass, Paul F. Tompkins, Molly Shannon, Colin Hanks, Jake Johnson, and Jason Ritter. The web series looks hilarious, so be sure to watch it.