Nevertheless, Roberts once again went all the way back to Tim Burton's 1989 classic to find his preferred Clown Prince of Crime.
"You know what, I'm a Jack fan," he said of Nicholson's iconic portrayal, adding: "but I'm old."
"Yeah, I love that movie, love those guys, love everything about them."
Eric's family knows a thing or two about acting; he is brother to Julia Roberts, father to Emma Roberts, while he himself is the most prolific English-speaking actor in the world, with more than 500 film and TV credits.
Along with Bale and Keaton, Adam West, Val Kilmer, George Clooney and Ben Affleck have all donned the Caped Crusader's costume, with Robert Pattinson lined up to try it on next in Matt Reeves' The Batman in 2021.