I was randomly surfing various sci-fi related websites and while trolling back through some older entries on one I found a poll that posed the question Will “Source Code” Help or Hurt Jake Gyllenhaal’s Career?
This made me laugh which I assume was the intention but I think it's plainly obvious to anyone who saw Prince of Persia that if he still has a career after that mess then it's pretty much bulletproof and he'll be around for some time to come.