Alas, the game uses a gimped version of the shout. I.e., "fuuuus, RODAH" instead of the epic "fus. ro. DAH!"
I'd love to have that epic version in the game, the one I've been shouting for so many months, but the sound effects and music would get in the way, as shown here.
http://instantbutton.me/buttons/fus_ro_dah_20110227001225.html
I wish we could get it in somehow. Maybe if we begged Bethesda for the original voice files used in the trailer (if that doesn't violate any weird voice copyright laws).
I can dream.