I enjoyed Wikipedia's vast amount of 'knowledge' and links to many thousands of hundreds of different articles, and became quickly addicted. At first I edited pages randomly without an account, and then I just decided "What the heck!". So now, I edit pages randomly but WITH an account!
(Note- When I say 'randomly', I don't mean 'going around to random pages and spamming', I mean 'going to pages I have information about and contributing'.)
I enjoy reading articles on Invader Zim and other works of Jhonen Vasquez. These are the pages I seem to edit or visit the most.