TGAH Theme Song Sang On Supernatural. Jan 17, 2014 7:04:03 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by tgahpodcast on Jan 17, 2014 7:04:03 GMT -5 I'm sure most of you have seen this already but just in case. Hopefully this will bring in a new generation of fans to the show. io9.com/hear-castiel-crooking-greatest-american-hero-off-key-1464077258/@charliejaneI saw this first on William Katt's Facebook page.