Firefly Promos Online August 14, 2002 In case you haven’t had a chance to see them on Fox, promos for Joss Whedon’s “Firefly” are now online. Looks like a lot of fun! Show premiers September 20th. Share this:Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)