GUEST ANNOUNCEMENT: Greg Sestero Our next guest at Sci-Fi Valley Con this June 9-11, 2023 in Altoona, PA is Greg Sestero! You know Greg best from his role as 'Mark' in the 2003 cult classic Tommy Wiseau film 'The Room'. He's also the co-author behind 'The Disaster Artist: My Life Inside The Room, the Greatest Bad Movie Ever Made'. Tickets and Vendor Tables on sale at scifivalleycon.com