Cast the Legion of Doom.

I'll elect to draw on the rosters from both the cartoon and the recent comics:

Lex Luthor: Michael Rosenbaum (not going to happen, but I can dream)
Joker: Crispin Glover
Grodd: CGI, voice Brian Cox
Cheetah: Kate Hudson (a rich, entitled, spoiled girl-woman who automatically generates negative feedback from me, she'd be perfect)
Solomon Grundy: Adam Baldwin
Toyman: Carrot Top (come on, who wouldn't pay to see this guy get punched in the face repeatedly by Batman)
Brainiac: Jeremy Irons

 

Legion of Doom (Casting Call)

Terry O'Quinn as Lex Luther


Jeremy Irons as Brainiac


Dennis Leary as The Joker


Jack Black as The Penguin


Christian Slater as The Riddler


Billy Bob Thornton as Solomon Grundy


Tim Curry as Sinestro

 

Wow. Tim Curry was my second choice for Sinestro next to Jason Isaacs. I thought he was too old though, so I went with Isaacs.

 

Here is Jason Issacs as Sinestro.

 

Harry J Lenixx as Black Manta
Laura Prepon as Giganta
Hugo Weaving ar Sinestro
Keith David as the Voice of Gorilla Grodd
Greg Eagles as the voice of Solomon Grundy
Kristanna Loken as Cheetah
Whoever plays Superman should play Bizarro
Maurice La Marche as Brainiac
Brendan Fraser as Toyman
Benicio del Toro as Scarecrow
And Bill Pullman as Lex Luthor

But that's just going of the cartoon version.