Heh...i'm most interested in them napalm bombs that are being dropped in the gameplay video there.
Should be cool.
Apart from that i think the atmosphere is gonna be awesome...the US heli's will be playing a playlist of authentic sixties "vietnamish" songs; should be mighty cool to to fly over a jungle as the gunner of the chopper with "on the road again" playing in the back.
Also; since i came only late into the whole BF:1942 thing i always got whooped by veterans. But now i can build up from scratch like anyone else.