My current series:

5) - Vacant Place until fillers end in Naruto or Bleach.

4) - xxxHOLiC - Being a CLAMP fan I could not miss it. Too bad I keep noticing the changes.

3) - .hack//ROOTS - Again, .hack fan from the very start.

2) - Fate / Star Night - Great story, great animation. Saber owns me... errr

1) - Suzumiya Haruhi no Yuutsu - Innovative series. Great animation. Amazing sarcasm. Great character. And like Yukimura, I like the ending so much its getting un-healthy.