Continuity mistake: When Alice leaves a party and is walking outside towards the Rockefeller Tree, she is wearing shoes with a chunky heel. When she goes inside the building with David, they show her walking towards the window and she has on shoes with a skinny heel. (00:59:15 - 01:01:30)
Continuity mistake: When there is a joint in Robin's hair, after the next shot the joint has disappeared. (00:16:15)
Audio problem: When David's Daughter Phoebe is showing Alice her stuffed animals, Alice is talking at one point and says "what about this guy?" but her lips are not moving.
