D.C. may be known as Hollywood for ugly people, but for a little while last night, it was almost like we were just plain Hollywood. Granted, there was no actual red carpet at last night’s “red carpet” U.S. premiere — which was billed as a World Premiere despite Tuesday night’s London screening — of Night at the Museum 2: Battle of the Smithsonian at the National Air & Space Museum. But there was a crowd…