President-elect George Bush seems to be as captivated with Hollywood as his exiting boss. Sunday night, he and Barbara Bush were rubbing elbows with Kim Basinger and Dan Aykroyd at the Cineplex Odeon Theater in Washington for a private screening of "My Stepmother Is An Alien," a Jerry Weintraub production. Monday night the Bushes were scheduled to join Arnold Schwarzenegger and Danny DeVito for the world premiere of Universal Pictures comedy, "TWIiNS" at the Kennedy Center as a benefit for Special Olympics.Washingtonians can expect to see the Bushes at major cultural events outside the film community. "We love ballet and opera," Barbara Bush said.