Brandon's snow memory:

Sliding down the backside of Wilson Peak in Colorado with my brother....It was summer but there was plenty of snow around, including near the peak, where we climbed up a 800 or 900 ft.-steep snow embankment as if our lives depended on every step until when we were on our way back down, when we realized we could run, jump and slide down the whole thing.
(I also liked the huge Philly blizzard of 2004.)