For those that don't know, FP actually wanted to be Robin in Batman Forever...ha ha. For serious!
Comic Book movies are risky business, but i honestly think if he's gonna step up 2 the plate and do a real super hero movie, he should play Jon Stewart, the Green Lantern (the one featured in the Justic League cartoon). Since DC is dipping in2 more movies (Superman, Batman...now Flash, Wonder Woman, and Justice League), i think it would work out well. If he was playing Jon in the Justice League movie, which is probably going 2 be done properly and be HUGE, a Green Lantern movie is almost bound 2 happen. Since Jon Stewart has started becoming the more popular GL since the 90's...overshadowing the classic Hal Jordan version, a solo movie would work nice...or if they did a Green Lantern movie, featuring the whole Corps, which is a very cinamatic idea in itself.
I can't really imagin any other established hero working or him being perfect 4 the part.