Whoa! SFX scenes in films

[blu-mood]

I was recalling some of the more unforgettable, can't-believe-I-just-saw-that special effects scenes in movies (when I first saw them). Here are some of my top ones:

-Pretty much every effect on the T-1000 in Terminator 2
-When Trinity rises in the air to fight the cops at the beginning of The Matrix (and most everything else, bullet time, etc. thereafter)
-The beginning of LOTR: The Fellowship of the Ring when Sauron comes out in his armor during the battle, swings his weapon, and sends men flying.
-The Battle of Pelennor Fields in LOTR: The Return of the King, when the enemies first came out riding the elephant-like creatures (and when Legolas climbs up one of them to bring it down).
-Nightcrawler attacking the President at the beginning of X2: X-Men United.
-King Kong vs. T-Rexes in Peter Jackson's version.

What are some of yours?