I actually rank this above 2/6/2010.... for years I wasn't sure which storm I liked more, but now that I think about it, I choose December 2009, even though my area got more in the February storm.
The anticipation before the storm was so much more thrilling, mainly because it was the first HECS in almost 7 years, while 2/6/2010 was the first HECS in 7 weeks and felt a lot like deja vu.
The other reason is the shock and rarity of it happening in mid-December. Like I said in another thread, I didn't think a storm of this magnitude was possible in December. It was just unbelievable.