1) My top fav is Dears from Love Letter. He sings it so well. Cuz there's this part without any accompaniment or music and he just sings solo. And it sooo rocks cuz you can tell he's way on tune.
2) I just love the title Todokanai Ai to Shitteita no ni Osae Kirezu ni Aishitsuzuketa. ha ha. it actually won an award for having the longest title. It means something like even though my love will never reach you, my love for you will continue uncontrollably on. or something like that. my jap ain't that good.
3) I find the song Aritakke no Ai de cute. You should watch the MV. It's sooo cute. Very unlike Gackt. But I suppose he IS unpredictable.