When this death row inmate (Gerard Butler) destroys an opponent in combat, he shares the glory with an unseen ally: The "gamer" remotely controlling his every move. It's like 300, minus 298. Machine guns, grenades, and a flair for brutal hand-to-hand combat are just a few of the weapons in this warrior's arsenal.

Riddick (Vin Diesel) is one of the last surviving Furyans, a race imbued with superhuman toughness. But he's far from endangered, thanks to a surgical implant that gives him flawless night vision. If you're dumb enough to challenge this beefcake to a duel, best to schedule it for noon.