I've recently found A Very Potter Musical, and I must say, I FREAKING LOVE IT.
It is amazing, Everything from "Harry Freaking Potter", to "Douche bags like Potter", to "It's Not Over Yet", to basically every quote, like;
--"And from that moment forward, I ate nothing but Protein Shakes, Falcon Eggs and ROCKS."
--"Hufflepuffs are particularly good finders." "What the HELL is a Hufflepuff?"
--"METROSEXUAL." -The Scarf of Sexual Preference
--UMBRIDGE SMASH!
--"Present your arm, Nerd. INDIAN BURN!"
--"Next Year, I'll be transferred to Pigfarts!"
--"RUMBLEROAR!"
--"Cedric, You're a Hufflepuff, Why don't you find a way out of here?"