English songs, Japanese songs, opening songs, ending songs, movie themes, random episode insert songs (I think there were maybe a couple of those)... whatever. :]
For English songs, The first two dub openings. There were a few more dub openings that I remember being catchy, but I can't recall which ones they were. Also 2BA Master and that one Team Rocket song. Awesomeness.
For Japanese, I like OK!, Advance Adventure, Challenger!, Spurt!, Rival!, Type: Wild, Takeshi no Paradise, Maemuki Rocket-dan, and Ware wa Collector.
For English songs, The first two dub openings. There were a few more dub openings that I remember being catchy, but I can't recall which ones they were. Also 2BA Master and that one Team Rocket song. Awesomeness.
For Japanese, I like OK!, Advance Adventure, Challenger!, Spurt!, Rival!, Type: Wild, Takeshi no Paradise, Maemuki Rocket-dan, and Ware wa Collector.