Reliable Source: All the president's (celeb) golf partners

President Obama teed off his Martha's Vineyard vacation last weekend with a round of golf, accompanied by a crew that included "Curb Your Enthusiasm" creator Larry David.The comedian, who also joined Obama on the links last August, by his own description sure doesn't sound like a super-fun golf buddy. "I'm not good company on the golf course," he once said in an interview on Grantland's BS Report. "I'm intense, I'm focused, and I'm not all that charming ... I'm so moody."