With current popularity of Chronicles of Riddick it looks like Vin Diesel is getting alot of praise. So much so that they are considering him to play the mastermind villian, Lex Luthor. I've seen Vin act and whether or not he can pull off a mastermind, I'm not sure. The article that I looked at is from CHUD so here it is...
Just yesterday it was reported that producer Neal Moritz (SWAT, XXX, The Fast and the Furious) was set to climb onboard the endlessly problematic Superman movie. Could he be bringing one of his bald, muscular stars with him?
According to a mysterious source (we’ll call him ‘Homeless Kryptonian’), that may indeed be the case. Warner Bros. has obviously decided they want to make their megabudget Supes movie cool for "the kids", and with Moritz’s involvement comes the desire to place Vin Diesel in the role of criminal mastermind Lex Luthor (a role previously linked to everyone from Kevin Spacey to Johnny Depp). With the Chronicles of Riddick franchise turning out to not actually be one (hey, I liked it), getting into another high-profile gig with a built-in recognition factor may not be such a bad idea for the Vin-man.
Other rumors currently leaping tall buildings include the studio’s apparent acceptance of McG as director, after an ongoing (and perhaps still existing) desire to get attention-span deprived, hopelessly patriotic director Michael Bay on board. The suits have also expressed interest in slipping chiseled Smallville star Tom Welling into the costume of their hero (despite testing of other actors for the part), but are concerned with the audience confusion that could arise from changing actors in the key roles around him.
We’ll just have to wait (perhaps until after Batman Begins opens, in fact) to find out for sure if the Man of Steel will ever take flight.