The sound of the Lily Belle's horn
The Star Tours boarding chime (I sure hope they keep this). http://www.youtube.com/watch?v=E5sjkjXPmz4
On the monorail, when the doors are closing, there's two chimes followed by a pneumatic hiss... I love that sound.
"Noooowwww approaching" on the TTA. And the Star Tunnel music here as well
Aww heck, while talking about the TTA... the clack-clack, clack-clack, clack-clack sound when you're making a turn
Illuminations soundtrack... 'nuff said.
Crickets chirping at the Wilderness Lodge
The music when you reach the dome in Spaceship Earth
I'll second the Haunted Mansion foyer organ
The moody orchestration of "Yo Ho" in the caverns of POTC, accompanied by the rushing of water
:sohappy: Man this is great just going through everyone's answers and then playing that sound in my head! I love it! Makes me want to be there so bad right now ! p like that's some kind of change of pace for me or something, lol)
I have to throw your last one on my top 10 list as well... The first time i hear Yo Ho, brings the kid out in me