I attached this “how to say” by the BBC because his name tends to be mispronounced. And if he’s going to be president, we should get it right.
“This week’s pronunciation is Barack Obama, who seems certain to run for the U.S. Presidency in 2008. His name should be pronounced buh-RAAK oh-BAA-muh. When he first came to prominence, there was some disagreement about his first name, which was also sometimes pronounced buh-RACK or even BARR-uhk, but our recommendation is based on the pronunciation he uses himself – he can be heard saying his own first name here”