I was flying from Bali to Los Angeles. Stopped at the Singapore Airport.
This must be one of the best airports in the world. Functionality, service, restaurants, water fountain, cleanliness, and sheer class, and is an absolute pleasure to be in transit here. There is plenty to explore inside.
My advice: come to the airport a few hours early so you can spend some time here and enjoy the famous water fountain in the middle, take photos, etc.