@BOC - What... so you were serious about liking Basquash? I thought it was absolute sarcasm. I personally thought it was good, until I saw the main character screaming and raging like a fucking idiot while being beaten by a girl in the second episode.

Top series
Cross Game. - I read the manga, and I generally never watch an anime if I already know the story (or I will check it out and hate it), but I can honestly say that the anime rivals or even exceeds its manga counterpart here. Heart-wrenching ED song too.

K-ON. - Solid slice-of-life and comedy. Great characters. Awesome ED sequence. Sometimes, simple is best.

Potentially rising to the top after a few more episodes
Eden of the East. - Interesting setting, with loads of potential. A serious story that seems to be thought out, so it just needs time to develop (I hope, at least).

Valkyria Chronicles. - Huge potential both in story and characters, as well as the battle situations and tactics that may be introduced later on as the show progresses.

Most disappointing
FMA 2009 - but only because of the unrealistic expectations about it.