15. 'Reign of Fire' (2002)
Frankly, it probably didn't matter who starred in this 2002 action-thriller — the hook was always going to be "Dude, dragons!" Still, McConaughey and costar Christian Bale both have a ball as mismatched survivors trying to wipe out the thawed-out fire-breathers who have taken over the planet in the not-too-distant future. McConaughey especially seems to be relishing playing the unapologetically kick-ass American warrior Denton Van Zan: He's as bat-shit awesome as his character name suggests.