Keanu Reeves getting his martial arts on again is enough to make any action film fan say "Whoa." (Yes, we took it there. Sorry).

Once upon a time, Keanu was of course "The One" in the groundbreaking sci-fi mind bender "The Matrix," which (for better or worse) altered the way action sequences were filmed for years to come. The nearly flawless original spawned two so-so sequels. There were no sequels to the Keanu vehicle "Constantine," an adaptation of DC's horror comic "Hellblazer," which came out the same year as the far superior "Batman Begins." But someone who has studied so many fighting techniques really shouldn't let that go to waste.

Shape shifters, witchcraft and crazy beasts are in the mix of this Samurai tale, where "half-breed" Kai (Keanu) is called upon to help the 47 leaderless samurai name-checked in the title on a mission of vengeance. Carl Rinsch ("The Gift") directs.

Reeves has "Man of Tai Chi" this year as well, which deals in martial arts (obviously) and underground fight clubs. Will that "Bill & Ted" sequel ever materialize? One ("The One"?) can only hope. "47 Ronin" arrives around Christmas time.

Btw, while we're on the subject, we'd love to see Keanu in "The Expendables 4"!