MegalomaniacI posted this as a response to a question, but I think it belongs here too.
My husband. I didn't find out about this until after we got married. I think he is a mild megalomaniac. He used to be in a band (that he started). We live in Nagoya city, near Toyota city. He thinks that his band brought the "warring factions" of the Nagoya and Toyota punk rock community together and changed the face of punk music in this area. He also thinks that everyone in the city knows who he is and that he has an image to maintain since everyone knows who he is. Sometimes he will go on endlessly about this. But every time I go to a club and meet new people nobody I talk to has ever heard of him or his stupid band (all the members quit because my husband is such an egotistical ***). So now his "super-band" is no more. But he still goes on about how important he is.
He is listening to the CD of his band right now on the stereo in the living room. Annoying! And it is too loud. But I can't say anything because he gets mad at me if I don't like the same music he does.