Some of my personal favorites are :
-The attack on Lindblum in FF9 (Almost made me cry

)
-The Boardroom ending in Oddysee.
Seeing those assholes fry was so satisfying, even if the first time I hadn't rescued enough Mudokons xD
-Completing a level set in Tomb Raider:The Last Revelation.
I felt so friggin accomplished getting through Cairo completely for the first time. ♥
(over complicated much

)