Tubthumping. Could there be a more apt description of Keitaro than "I get knocked down, but I get up again"?
Pretty Fly. Would be better without the subtitles, actually.
Oops, I Did It Again. Super-short version. Suits Naru perfectly.
Motoko Tribute. No idea what the music is, but it sounds like something Vince would like. Vince, any clue?
Tarzan. W00t! I like the music, I'll have to check these guys out.