New Regency has picked up Gunslingers, a pitch from Braveheart screenwriter Randall Wallace, as a starring vehicle for Vince Vaughn, who is attached to produce.  According to Deadline, details are being kept under wraps, but the plot has heroic and iconic characters from the past collide in a modern day L.A.-set urban reality.  The movie "explores what real heroism is in a fun an unexpected way."  Presumably, Vaughn will play a fast-talking know-it-all because he never gets cast as anything else.Vaughn has a string of upcoming comedies where he apparently plays a fast-talking know-it-all.  He'll next be seen in the R-rated sci-fi comedy The Watch (July 27), then he has a minor role in the atrocious Lay the Favorite, and he's reteaming with Owen Wilson in Shawn Levy's The Internship.  As for Wallace, we reported back in February that he had re-teamed with Mel Gibson to co-write a new draft of the Viking movie Berserker.