Sensei ... I'm with 'ya on the crazy-busy thing. The holidays and all the assorted / associated stuff are killing me this year.

I'm still struggling to find time to put my year in review section together, too.
Anyhow, for me, it's kind of a toss-up. I acquired a few things that really, really made the cel-addicted fangirl in me do the excited sqweeling thing. If pushed, though, I would have to say BEST acquisition for the year is a toss up between:
This section of
Orphen Hanken Cels. I got all of these during 2011 ... something I still can't believe.
And
this Aya Opening Cel from Weiss Kreuz. This one was a cel that belonged to a dear friend, and I was lucky enough to adopt him this year.