hmm... after extensive soul searching...
Shows that finished airing in 2007
========================
I will vote Lucky Star for 1st place. Interesting Slice of Life
with lots of wtf elements that kept me entertained throughout the
24mins. Never did I have a moment where I feel like doing other
things other than watching the show. It also had convincing
everyday dialogues where the character made small talk, much like
everyday life (except RL is less extreme). The friendship between
Kagamin x Konata also felt genuine, with lots of moments in the
show that proved it, like the episode where Konata felt that
Kagamin was unhappy over "love" and took her out on the streets of
Kyoto (albiet also for shopping on her Anime goods), ending with a
NeoPrint and chatting with her the same night through the
phone...
Kanon ended on March 2007, so it still stands as a contender. I
vote Kanon 2nd. The story was very well weaved, nice graphics, the
characters voices sounded convincing and (with the exception of
Ayu) the interaction between Yuuichi and the other people looks
genuine. And for Nayuki ~nyuu 
For Shiori "ice-cream daisuki!" For Mai and Sayuri!
And, for Akiko-san "Himitsu Jam 
"
Mahou Shoujo Lyrical Nanoha StrikerS, much as I wanted to give it a
high ranking, wasnt that great in my opinion. We get too much of
the training lessons and the battle is rookie centric. It should
have been 26 episodes of Nanoha x Feito and more of Yagami Hayate's
tricks. Reading the recent issue of Megami 92 also gave some hints
of underdevelopment of some characters in the Anime adapation. In
Megami 92, you'll notice Teana and Subaru's sketches are more well
drawn than the others, including (imo) Yagami Hayate's. In short,
I'm nominating MSLNS only for love of Feito-chan.
Shows that started in Winter 2007
=========================
Prism Ark was relatively good, although I've heard that the Anime
changed alot of the original story. Apart from 1 episode, we get to
see much fanservice and Precia being love-love with that guy
(whatever his name is)... and that is already enough to entertain
me......
Myself; Yourself was also a good show. Kept me watching most of the
24mins, and they revealed the character's stories in a nice
way.
