This interview is old ('97) but how many people know of the interview from Charlie Rose with JW and Itzhak Perlman? You'll have to jump ahead to after John Leguizamo but its a good 20-30 min interview.
Lets not forget what Stravinsky once said: "Good composers borrow, Great composers steal." It's John Williams style that we all love so of course his style is going to be similar in his compositions.