ok here's my 2 cents:

even though she's too old.....KRISTEN CHENOWETH as HARLEY QUINN.... even if only animated. she has the personality.

NIC CAGE as BATMAN....who in their right mind DOESN'T want a ELVIS version of BATMAN?

WILL SMITH as EVERYONE.... EDDIE MURPHY played the KRUMPS. WILL could be BMAN, ROBIN, CWOMAN, and the citizens of GOTHAM.

BTW the last 2 are jokes. OR are they?

I like Cranston as Gordon, Gosling as Wayne/Batman, Maybe, but for the villin, how about ..The Riddler, and who else but David Tennant for the role? No Robin, Please, Nightwing, maybe..Hmmm Nolan did say he wouldn't make another Batman movie, and Bale won't be putting on the cowl again...Hmmm? Well maybe the cane was a nod to Batman Beyond, and we need find a young Mr. Mcginnis???

and catwoman, What about Olivia Munn?

Im not sure how young you are looking but Colin Ferell would make a GREAT BATMAN/BRUCE WAYNE

Hells to the no for Olivia Munn as Catwoman... that's just this man's opinion.  :)

I STILL say no more Batman movies until the Justice League movie, Do a fecking live action TV show for feck's sake...

Armie Hammer as Batman, Cranston as Gordon, and like the 1960s TV series and SNL get an A lister to play each week's guest villain...

Batman movies are hard to pull off because you have a 73 year old character and you are trying to cram all that into a 2 hour movie...

Do an entire season to create the new Gotham THEN put Batman on the big screen again, either in a World's Finest Movie with Henry Cavill or The Justice League movie, but for now confine Gotham to the small screen, it's been done to death in theatres!

@MrJawbreakingEquilibrium - Gosling turned down GL without reading the script. He also turned down Batman when they were going to do a Justice League movie. He has also turned down Captain America and the role of the Human Torch in the first two Fantastic Four movies. That pretty much indicates that he doesn't want to do a comic book film

As far as I know that was a rumor and it was for a Justice League movie and all he said was that he didn't think anybody would buy him as a superhero.  That was in 2007 and up til then he said the option - to play a superhero hasn't crossed his path.  And from what I've read I can't find where he turned any of those roles down but instead was just again rumored to have been up for them.

I just want to know when I'll get a Venture Brothers movie starring Shawn and Aaron Ashmore.

Well since it's "As far as you know" then why go any further, it must be true.  The fact is back in February 2009 Latino Review and Ain't It Cool news reported that Ryan Gosling, Emile Hirsch and Sam Worthington turned down the roll of Green Lantern.

Best actor for Batman who will never play Batman...Daniel Day Lewis

Best actor for Joker who will never play Joker...Tim Curry

Batman...Jon Hamm

Hugo Strange...Mads Mikkelsen

Hush...Jason Statham

Dr. Hurt...Michael Fassbender

Riddler...Woody Harrelson

Deadshot...Ray Park

Olivia Wilde...Catwoman

Poison Ivy...Scarlett Johansson

Harley Quinn...Amanda Seyfried (I like that choice)

Commissioner Gordon...Bryan Cranston (I like that choice)

Joker...Paul Bettany or Crispin Glover

Bane...Nathan Jones

Robin...Jaime Bell (Jason Todd Robin)

Alfred...Anthony Hopkins

Two Face...Chiwetel Ejiofor

Killer Croc...The Rock

Scarecrow...Ralph Fiennes

Mister Freeze...Denzel Washington