Sunshine - The entire soundtrack is great, but
The Surface of the Sun is particular touching.
Transformers -
All Spark and
Optimus Vs. Megatron are my favorites.
The Island - The only one I heard is
My Name Is Lincoln, and it's absolutely amazing.
Batman Returns - The theme song from the beginning of the movie. That score
is Batman for me.
These are just some of my favorites however. I rarely listen to any other music than soundtracks, so making a list of all my favorites would make it a bit long.