Hmmm...
[1] Pita-Ten
[2] Fullmetal Alchemist
[3] Shuffle!
[4] Tengen Toppa Gurren Lagann
[5] Goshuushou-sama Ninomiya-kun
[6] Higurashi No Naku Koro Ni
[7] Eureka Seven
[8] Shakugan no Shana
[9] Death Note
[10] .hack//SIGN
Just like Suvi's list, these probably aren't in any order, but for some reason Pita-Ten always comes to mind first, so it probably would still fall in the #1 slot even if they were in order.