Alright, heading into video game territory.
Zelda: Ocarina of Time -- Classics.
Gerudo Valley,
Song of Storms,
Saria's SongZelda: Minish Cap -- It's a GBA song, so don't expect the highest sound quality.
Cloud TopsZelda: Link to the Past --
Castle theme,
Dark World theme...That's enough Zelda for now. Moving on!
Megaman 5 -- Gravity man, specifically
this remixTotal Annihilation -- all of it, but
Warpath and
Attack!!! are some of the best tracks. The best part: the music only plays when your units are in a conflict, making any skirmish an epic battle.
VVVVVV -- again, all of them.
Positive Force,
Pressure Cooker, and
Pushing Onwards are some of the best.
Cave Story: I'm linking to the remastered versions from the + and 3D ports, but the originals are just as amazing.
On to Bushlands,
Plantaion/Title Screen,
Last BattleSuper Mario Galaxy -- My brother actually bought the CD to this.
Good Egg Galaxy,
Gusty Gardens Galaxy, and the
Final Bowser BattleYikes, I'm not even halfway through my favorites. I'll take mercy and stop here.
Oh, and Unholy_Gibbon, I call foul on the Gears tunes. They weren't made specifically for the games