Game Songs/Tunes You Couldn't Stop Humming

The one tune I couldn't stop humming (even to the point it started annoying me) was Chu-Chu Rocket's main menu theme (Dreamcast). Damn the thing's catchy.

http://www.youtube.com/watch?v=6Q5tMMbb1AE

Those Final Fantasy battle anthems get stuck in your head.

Plants Vs. Zombies main theme is pretty catchy.

Most of AC:CF and NL songs got my attention,especially the 2 AM which I hum it the most

Thanks, now it's in my head too. xD

Anytime I play a game with music that's not meant to be super-ambient, I'll get at least one song from it stuck in my head. Currently, it's the Mushrise Park theme from Mario & Luigi: Dream Team. I make the bros. jump in time to the beat of the music when I'm walking from one place to another. I think I may have a mild form of OCD.

Every single Final Fantasy battle theme ever.

@jekyll: Beat me to it. :(

Most Sonic the Hedgehog tracks; the most recent being windy hill.

@Renegade_Fury: Sonic Generation's Speedway (I think) remix was in my head for ages

For the past couple of days it has been the Gerudo Valley theme from Ocarina.

Most recently, After Burner and Garou: Mark of the Wolves.

The Mirror's Edge theme song

Song of Storms

Whenever I play Starwing I have stage 1 tune stuck in there

The theme from the motorcycle level of Sly Spy (Amiga version)

Homeworld Theme. Zelda Theme, Song of Storms. Aeris' Theme, To Zanarkand, Parting Forever and Neverending Journey from Lost Odyssey--all those brooding Uematsu songs. Oh yeah, and Butterfly from DDR. That song was irritatingly catchy.

I can't stop doing a particular part of a Canyon Duel theme from Need for Speed: Carbon for some reason. Not really humming it, but I randomly knock on a table in the same manner as the theme went. I haven't played the game for years, but that is my tune of choice for some reason when I'm subconsciously knocking on the table with my finger or something similar.

Final Fantasy Battle themes.

It was really bad during my 7 and 10 playthroughs.

FF13 had a forgettable tune.

Thought of more:

Enchanted Arms - Day At The Academy

and

Silent Hill 3 - The Mall