Harvey Weinstein, who knows something about self-promotion, offered a Harvey-like bit of advice for President Obama at tonight’s lavish White House state dinner for visiting British Prime Minister David Cameron. He suggested to reporters that Obama tout his record more enthusiastically; ”He’s too humble.” (Weinstein’s fashion designer wife Georgina Chapman designed Michelle Obama’s gown for the occasion.) The dinner was reported to be the largest which the President and First Lady have hosted since moving into the White House. Seated at no less than the head table was George Clooney who made it to the dinner after testifying before Congress earlier in the day about his recent fact-finding trip to the Sudan. Also there was Overbrook Entertainment’s James Lassiter who’d hosted last October a $35,800-per-person fundraising dinner with producing partner Will Smith for Obama’s reelection campaign. Also Jeff Shell, the London-based Chairman of NBCUniversal International, and Marva Smalls, EVP of Public Affairs/Chief of Staff for Nickelodeon/MTVN Kids and Family Group.  Damian Lewis was among the British entertainment contingent attending (since the president is reportedly a big fan of Showtime’s Homeland) along with Downton Abbey husband-and-wife Hugh Bonneville and Elizabeth McGovern (who came with her real-life husband, British film producer and director Simon Curtis). Also there was British actor Idris Elba, soon to be seen in the Fox film Prometheus, and Oscar nominated British actress Carey Mulligan. The entertainment included the British band Mumford & Sons and American singer-songwriter John Legend.