I have been (pleasantly) surprised by the number of Firestorm references to date, although I adore the 'Jaws-like' build-up they're giving Gorilla Grodd. Firestorm was always one of my favorite characters, and they've picked, I feel, very compatible villains from his 'repertoire' to pit against Barry. I do wonder, however, what's going to happen when (if?) Ronnie himself makes it into this reality.
Seeing Wade Eiling this week ("Plastique"), it suddenly struck me that he is, in a way, the DC counterpart of "Thunderbolt" Ross, in his persecution of Captain Atom and creation of Major Force etc.. The fact that he's played by Clancy Brown, who was the Kurrgan in "Highlander" (the original 1985 film), the sadistic prison guard in "The Shawshank Redemption" and even the voice of Lex Luthor in the late 90s animated Superman, just adds to that.