Alphabet backwards (not too uncommon though), the xp values for several levels in RuneScape, and the text on the Newberry medal (picture).
Funny story, I also memorized the alphabet backwards. A couple years ago I went to this Lasertag place where they had dumb "contests" between rounds. You win the contest, you get free coupons for Lasertag. One of those contests ended up being reciting the alphabet backwards in roughly 5 seconds or so (with a bit of leeway). Ended up saving me $20.