Recently, I had the pleasure of flying on the Dreamliner during a flight from London Heathrow to Chicago O'Hare. The Dreamliner "lie flat" seats were wonderfully comfortable and are far superior to the "angled" business class seats that I experienced on previous American Airline international flights. The seats on the previous flights were remarkably uncomfortable.
As to other aspects of the flight, the food was very tasty and the flight attendants were friendly and attentive. I was also very pleased with the quality and variety of the entertainment options.