Memorization-type stuff...

Okay, so for all you people out there, what types of things that have to do with memotization and repetitivity do you know? Examples, instruments, languages, pi, cooking/recipes, measurements, periodic table, breeds of animals, types of plants, laws, and so on! and if you play instruments or sing, do/can you read sheet music or do you do all that stuff by ear?
I know all the elements of the periodic table but can only recite the first 40 in order. Its my goal to learn as many languages and instruments as i can (currently working on swedish, norwegian and german and piano, guitar, singing and saxophone(i know how to play clarinet well)), I can memorize all the words to almost any song in under 2 hours and have it stay with me. I'm really tired right now so if I think of any more (probably wont though...) i will post it... Now i'm off to visit the land of make-believe, snoozy lane, la la land, awaiting a visit from the sandman... Whatever you want to call it, good night, gute nacht, god natt, buenos noches, etc...