The Actors considered to play Batman in this film according to IMDB
Kurt Russell - Could have done it, good choice
Al Pacino - Dunno, he would have been too short for the role
Patrick Swayze - Interesting choice
Mel Gibson - Heard he was the first choice, but I wouldn't have minded him
Tom Cruise - Nah too short
Nicolas Cage - No way
Harrison Ford - Pretty solid choice, but too tentpole at the time
Pierce Brosnan - Good choice but had he been Batman, then we would have never gotten Bond
Kevin Spacey - No
Alec Baldwin - Good choice aswell as he was a bit of an action man back at that time
Kevin Costner - Dunno, but good actor
Richard Gere - Too pretty-boy
Michael Biehn - Might have worked
Ray Liotta - Heard he turned it down, but I wouldn't mind if he were cast
Tom Hanks - Questionable one, could had the same effect as when Keaton was cast, but he seems a bit "too nice" for the role.
John Travolta - No
Sean Penn - Weird choice
Emilio Estevez - No
Matthew Broderick - No
Sylvester Stallone - Couldn't see him as Batman
Kevin Kline - No
William Hurt - No
Mickey Rourke - Great actor, but no
Bruce Willis - Bit of a diva and can't see him as Batman
Charlie Sheen - Were they joking?
Dennis Quaid - Could have done the job
Jeff Bridges - Not a bad choice
Bill Murray - Heard that he was considered for a comedy version, but IMO he wouldn't be my choice.
Arnold Schwarzenegger - Big dude, but the accent, things could have been way worse
Tom Selleck - Batman with a stache?
Kyle MacLachlan - Good choice, I would have gone with that
Steven Seagal - Heard Jon Peters wanted him in the role, but he doesn't having the chops
Jean-Claude Van Damme - Said that he audtioned, dunno if that's entirely true
Willem Dafoe - More Joker than Batman