My two favorite Hulk "ROOOOAAARRRSSS!!!" in this movie are:

(1) when they down that first Serpent Ship, and all the Chitauri start that weird shrieking. Then, they cut to the "Team Circle" shot you see in all the trailers. That GROWL-ROAR he does in response to the aliens is soooo perfectly Hulk. The animal roaring back at the other animals.

(2) When Tony wakes up at the end. Not the roar that woke him up, but right after where Hulk roars in triumph! THAT roar was fucking CHILLBUMPS baby! THAT was the first time in my life I finally got to hear how I always wanted the Hulk to sound....deafening!

The wife's out of town this weekend, so I might end up going to see this thing for the 3rd time....