Victor Garber is sort of everywhere these days — he recurs on Lisa Kudrow’s Web Therapy , he’s the ominous narrator on NBC’s The Slap , and even popped up on Louie last year. But when Greg Berlanti, the executive producer of CW’s The Flash and his former boss on Eli Stone , called him up with a chance to be on his latest show, playing one half of the iconic Firestorm character, Garber, who is admittedly “not a comic book guy,” found himself excited about the possibility nonetheless.