From the AP:

PHILADELPHIA - Rapper 50 Cent is pulling out of next month's Live 8 concert because of a scheduling conflict with his new movie.

The shooting schedule for "Get Rich or Die Tryin'" — a film based on the life of the artist formerly known as Curtis Jackson — recently changed and will now conflict with the July 2 show on the Benjamin Franklin Parkway, publicist Yvette Gail said.

Now I'm not that hyped about Live 8.  I think it means well, but ultimately won't do anything to end poverty in Africa.  But this is a charity event, and Curtis is being very selfish for passing up the concert to shoot a movie, and a movie on HIS life, no less.  You mean he couldn't have rescheduled it for a couple of days later? 

The concert is in Philadelphia, and the shooting is in Toronto, which isn't no more than a seven hour drive (and you know he wouldn't be driving anyway).  Even if he didn't want to fly back, he could have drove.  To pull out like that is messed up.

And in an ironic twist, I happened to click on a picture on the same news article link (Yahoo) which happened to be from E! Online, and it had this caption:

50 Cent is taking aim at some DVD producers for allegedly failing to keep a promise not to cash in on the rapper's name.

Yeah.  Obviously 50 knows something about breaking promises.