I'm casting a fictional remake of The Wizard of Oz. It's going to be an extremely serious reproduction, with no silliness whatsoever, so I want only serious suggestions for cast members. I have a budget of 100-million dollars for casting, and 5 dollars for camera equipment, etc. Here are my current pics for casting:

The Cowardly Lion: Will Smith
http://www.dhadm.com/wp-content/uploads/2007/12/will-smith.jpg

The Scarecrow: Harland Williams
http://www.comedycentral.com/images/cc_records/williams_harlarious_m4.jpg

The Tin Man: Arnold Schwarzenegger
http://blogs.technet.com/blogfiles/kaiaxford/WindowsLiveWriter/Imbaaaaack_D1AE/Arnold-Schwarzenegger-The-Terminator_thumb.jpg

I'm also considering casting Ozzy Osbourne as the Wizard of Oz.

Please give suggestions on who could fill in the other roles. Serious now, no silliness!

[edit]
Contrary to popular belief, the Tin Man will NOT have a plasma cannon.
[edit]
Ok. Maybe a little one.

Personally, I don't think it needs to be remade...

But I dunno really. I liked the wizard of oz themed scrubs episode :p