I started the year with the definition of filk:
/filk/ n.,v. [from SF fandom, where a typo for `folk' was adopted as a new word] A popular or folk songwith lyrics revised or completely new lyrics and/or music, intended for humorous effect when read,and/or to be sung late at night at SF conventions. There is a flourishing subgenre of these called`computer filks', written by hackers and often containing rather sophisticated technical humor.
Then I proceeded to show some Math Filks! I always start with Mathematicious which is a review of Regents Math. Then I introduce Tom Lehrer!
Regents Math Review!
Base 8 Arithmetic!
Periodic Table of Elements!
Well, that's all folks!