Sen. Patrick LeahyPatrick Joseph LeahyCongress should build on the momentum from spending bill Overnight Tech: Zuckerberg grilled by lawmakers over data scandal | What we learned from marathon hearing | Facebook hit with class action lawsuit | Twitter endorses political ad disclosure bill | Uber buys bike share Overnight Cybersecurity: Zuckerberg faces grilling in marathon hearing | What we learned from Facebook chief | Dems press Ryan to help get Russia hacking records | Top Trump security adviser resigning MORE is calling Ben Affleck a "great pick" to play Batman.

The 73-year-old Vermont Democrat and Caped Crusader fanatic — who has moonlighted as an actor with cameos in three "Batman" movies — tweeted Friday:

Warner Brothers announced Thursday that the 41-year-old Massachusetts-raised star, who has flirted with a political run over the years, is poised to play Batman in the untitled sequel to the Superman movie, "Man of Steel."

The news of the "Argo" director taking on the role of the defender of Gotham drew swift reaction on social media sites, with some Twitter users questioning the casting choice.

The Batman and Superman flick is slated for a 2015 release.