I'm a fan (and you should be too) because... I love his music, wake up, live and sleep listening to his music. To me there is no day without listening to Apocalyptica. when I hear, there's a feeling in me that wants more and more like ... a drug; Yes like a drug. Everyday i want more and more.
Also because its members (Eicca, Mikko, Paavo and Perttu) seem very pleasant and attractive.
My favorite songs are; Broken pieces, S.O.S (anything but love),End of me,Not strong enough, betrayal/forgivenes, bittersweet,Grace,Hope, I dont care... and ALL THE SONGS.
And for these reasons and more, I'm fan of apocalyptica (;