Their Ego

Nme.com had a list of the most egomanical artists of all time, but it was a crap one. Elton John. Prince. Yes, they have egos, but it hasn't taken over their careers, and rarely gets under your skin. Nearly every artist that reaches fame has an ego. But when their ego clashes with their music it's a dangerous thing for the listener to put out of their mind.
Oddly enough, and I didn't put much thought into this, I could only come up with 7 people who's ego has taken over their music. I did steal one name from Nme.com. I should think of more, especially in other non-Rock genres. Some of these people I like, but more often, especially in their later work, they've become pains in the butt.

7 For the Ego Hall of Fame and why:

Lou Reed - Prefers interviewers who don't insult his high intelligence

David Bowie- Once said he wouldn't sing his old hits in concert anymore. Guess what happened years later

Wynton Marsalis - Jazz trumpeter who somehow became the voice of his generation. Ruined Ken Burns' Jazz

Terence Trent D'Arby - After his striking solo album, compared himself to Prince.

Bob Geldof - After Band Aid and Live Aid, released an unlistenable solo album because he thought he was an important "artist"

Bono - His mugging in Rattle and Hum could make you hate him forever. Don't you think the Edge is the real genius in the band?

Billy Corgan - When the Smashing Pumpkins broke up, we cheered, then he released a solo album. It tanked. Then he reunited the Smashing Pumpkins. Guess who's not cheering?

Toby Keith - Thinks of himself as this generation's Waylon Jennings. Only Waylon was no Outlaw-wannabe, and Ol' Waylon had better songs