I personally like the Frontier Brain theme from Emerald.
Red's theme and the intros!
Platinum Giratina theme... or Cyrus's theme.
Suicune, Ho-Oh and Lugia's themes from HGSS.
It has to be the platinum theme right before you enter the elite 4 building... Although if your talking about the movies it's the song that plays when Ash get's turned into stone in Pokemon the first movie..... It's so sad..... D:
The g/s title music.
I love the short, slow part right after the intro video, which then speeds up and turns into the r/b title music.
Yeah. I don't like that the slow part was taken out in Crystal. And they didn't put it back in HG/SS.
HGSS Kanto Trainer/Wild/Gym Leader Battle. And the Champion/Red theme.
Lance/red's theme, johto kanto wild pokemon battle, arceus's theme, silph co. theme, hoenn rival's theme, platinum frontier brain theme, eterna city theme, the-route-right-after-twinleaf-town's theme, underground/GTS theme, wi-fi plaza theme.
-Pika Cup 1-3
-Mewtwo Stadium Battle
-Golderod Game Corner
-Team Aqua Encounter
-Sinnoh Trainer Battle