I don't have my "Top 5" But I like FMA and Full Metal Panic a lot. ^^
I also like to watch "Love Hina" - it's very funny to watch Keitaro getting beaten by Naru. ;D

hmmmm 10 5 anime...
1.Code Geass
2.Gurren Lagann
3.Death Note
4.Bleach
5.Eureka7

1. Onmyou Taisenki
2. FLCL
3. Inuyasha
4. Beyblade
5. Happy Lesson

My top 5 are
1.Higurashi n naku koro ni
2.Black Lagoon
3.Darker than Black
4.Tsubasa chronicle
5.Ergo proxy

I'm going to leave out a few on this one.. hard choice:

BECK
Golden Boy
Samurai Champloo
Scrapped Princess
Sousei no Aquarion

This is so hard since i have a lot of anime that I like. But here they are:

Bleach
Tenjho Tenge
FMA
Code Geass
Vampire Knight

There is so mush more, but I don't want to rant. :o

1. Tengen Toppa Gurren Lagann
2. Death Note
3. Code Geass
4. The Melancholy of Haruhi Suzumiya
5. School Days (epic ending)

1. Slayers series
2. Neon Genesis evangelion
3. Suzumiya haruhi no yuuutsu
and... err.......

I think Slayers was best.
(Too cute Lina Inverse...^^)

my top 5 is :

1. Nana
2. Itzakura Na Kiss
3. Bokura Ga Ita
4. Paradise Kiss
5. Junjou Romantica

Not in any particular order

Death Note
Monster
Hikaru no Go
Neon Genesis Evangelion
Fullmetal Alchemist

But my top 5 anime that are not necessarily deep but just really entertaining.

Code Geass
Full Metal Panic!? Fumoffu
Sayounara, Zetsubou Sensei
Nodame Cantabile
Ouran High School Host Club