Video Games (specifically Final Fantasy, Uncharted, Assassins Creed, Folklore, Dragon Age, Dragonball Xenoverse, Kingdoms of Amalur, Crash Bandicoot and assorted pretentious art games)
Philosophy (to the extent that online discussions can be called "philosophy")
Psychology
Criminology
Analysing weird people
British Comedy (specifically 'Allo 'Allo!, Only Fools and Horses, Blackadder, Father Ted and the like)
Anime (Death Note, Attack on Titan, Assassination Classroom, Gangsta, The Legend of Arslan, Black Butler, Welcome to the NHK)
Well, Steam is basically like Itunes but for PC Games. The Steam Summer sale is a period of about 2 weeks where they run completely insane store-wide discounts on most titles.