This my personal Top 20. These are anime that I personally find enjoyable and stand out quite abit. As well as story, animation, art, and personal interest. This list is not permanent as it's subject to change.

Top 20 Rating
Baccano! (TV)
Bakemonogatari (TV)
Danganronpa The Animation (TV)
Deadman Wonderland (TV)
Eden of the East (TV) Excellent
Fate/Zero (TV)
FLCL (OAV) Masterpiece
(The) Garden of Sinners (movie series)
Gatchaman Crowds (TV)
Kill la Kill (TV) Excellent
Loups=Garous - The Motion Picture
Maria the Virgin Witch (TV)
Michiko & Hatchin (TV)
Nichijou - My Ordinary Life (TV)
Occult Academy (TV)
Penguindrum (TV)
Soul Eater (TV)
Tiger & Bunny (TV)
Un-Go (TV)
WATAMOTE (TV)