My two favorite are Pokemon songs are the opening theme of the Battle Frontier and the opening theme for Battle Dimensions. I rather dislike the DP opening theme before Battle Dimensions.
- Luigi
PS. Although I can't say it's a favorite, I also enjoy listening to the japanese original Pokemon theme song. It's such as classic although I'm not even japanese. xD
I love the song What Kind of Pokemon Are You? from the 2.B.A Master album, mostly because it was so funny! And I also love love the original English theme. (and this one rendition of the original Japanese one is pretty good)