Obsession is maybe too hard-edged; interest too soft.

George Lucas said that Steven Spielberg and Harrison Ford both didn't want to include aliens in Indiana Jones and the Kingdom of the Crystal Skull.

“And I said, ‘I’ll make you a deal, I’ll give you permission to use the five notes if you let me direct a Bond film,’ and he said no,” Spielberg added. But I gave him the five notes anyway.