Not the best anime, but my favourites. In alphabetical order.

Top 10 Favourite Anime Rating
Chobits (TV) Excellent (dub & sub)
Elfen Lied (TV) Very good
Ghost in the Shell: Stand Alone Complex (TV) Excellent
Gunslinger Girl (TV) Excellent
(The) Melancholy of Haruhi Suzumiya (TV) Excellent
Nodame Cantabile (TV) Excellent
Princess Mononoke (movie) Masterpiece
She, The Ultimate Weapon (TV) Masterpiece
Toradora! (TV) Excellent
Whisper of the Heart (movie) Masterpiece