Genki+ (Morning Musume)
Dokusenyoku (Morning Musume) - holy shit. I love this song so much. I always thought Ai no Dai 6kan was one of their best albums, but this song really sealed the deal for me.
Ikimasshoi! (Morning Musume) - should have been a single.
Ship! to the future (Morning Musume) - always gets me teary-eyed. (Well, almost. Then Tsunku jumps in going, "Somethin' like this, yo, yo" and that just loses it for me...) But I think it could be a really touching PV. If not Ship!, then Dekkai Ai Uchuu ni ga Aru or WHATEVER that song is called. Name's too long.
Say Yeah! -Motto Miracle Night- (Morning Musume) because it's awesome and that is all.
Dekoboko Seventeen (W) - because the song is awesome.
I'm sure there are more, but I can't think of them right now...
(Oh, and it's hand MADE city, not Hand MAID...so the chances of seeing MM in maid outfits aren't likely in that PV.)