The "Reveal" noise.

[J of The Wind]

Cant Beat the classic Zelda- " You got a THIIIIIIING! " music. xd

Also YES on the Jiggy get music. I finally got all of them. ; w;  

[Allegro]

Also, the little tune that plays after beating a Robot Master.  

[Paper Sonic]

I love the Kirby Victory dance/music~
All the Zelda jingles are pretty great.
And definitely the Robot Master one.  

[ecopper12]

Pokemon. Gotta love the victory music that plays every. ********. time you do something good.

Oh wait...

I don't like that. D<

Imma have to go with Allegro and say the Robot Master jingle.  

[Monster_Mario]

My all-time favorite is the infamous DOUBLE-KILL! burning_eyes burning_eyes  

[Unflamboyant]

The jingle when you kill your nemesis or gain a new one on TF2.  

[I Dizzy-Kun I]

Mine is the Super Smash Brother's Brawl thing,

when you gotta slove this puzzle thing, before fighting Tabuu, the first time i did it, i did not finished, then the second time and third i think, i figured it out.