Ear Worms? Oh boy, this will be a long list....
Sonic 2: Boss theme:
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Ever since I heard this song it has always stuck in my head, and won't leave me alone.
Sonic And Knuckles: Death Egg Zone Act 1:
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I have always loved this song, something about it gave off that "final chase to win" feel for me. Although, it is beat by two other songs...
Sonic The Fighters: Death Egg's Eye:
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This. This is a great way to get someone to panic in a way to make them enjoy a fight, first time I heard this song I knew I was in for a pounding, and was I right.
Sonic The Fighters: Death Egg's Hangar:
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This, my friend, is also a great song for a "you are dead if you fail" feel. Although it isn't heard that much in Sonic The Fighters, it was used in Sonic All-Star Racing Death Egg. And the second I heard it there with all the other sounds of deathly machines, It made me want the game even MORE. In fact, this song, and the racing level was what inspired Egg Hanger[sic] that me and Sphere collaborated on!
Sonic Next-Gen: Solaris Phase 2:
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I have always been a fan of orchestral songs, and when I heard this for the first time I loved it. And I randomly started humming it to myself ever since when I am in a epic battle of any kind.
Almost every Sonic game with a underwater level: THE COUNTDOWN:
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Playing the old Sonic games at about 10 or so, I get to the water level in Chemical Plant. I am at the part where you jump on the moving yellow blocks to get up to a higher part when suddenly... THIS thing starts to play, scared the living daylights out of me and I made a scramble to get out, but failed because I was panicking. Ever since then I always have this thing stuck in my head for when a countdown is at the 10 seconds mark.
My Little Pony Friendship Is Magic: Cupcakes:
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To further push the brony cause, well not really, but anyways! When I was taking a look to see what this whole thing was about, I picked the episode that had Pinkie Pie singing this song as one of my firsts ones. At first I thought it was annoying and moved on, but little did I know that throughout the rest of the time watching the show Pinkie was secretly planting her crazy little seeds in the back of my head, and now I can't eat a cupcake or even LOOK at one without playing this song in my head, or on the PC.
...That's it for now, more to come when it ISN'T 3AM....