Indeed...wasn't 24fps selected back when film was..you know...film? It was picked as the point at which the eye/brain combination smeared movement together into a seamless fluid continuity...so I don't understand what 48fps will get you. Gaming I can get...the extra few hundredths of a second give you a chance to see and respond a little faster...but for a sit-back-and-enjoy-the-ride experience...who cares?!?
Oh and add my +1 to the "3D?!? KILL IT KILL IT!!! KILL IT DEAD!!!" crowd.