Continuity mistake: Liberace's mother is playing a poker machine at her son's house, with Matt Damon watching. She puts the money in and pulls the lever and waits to see if she has won. She does this over and over, but one time she puts the money in, she doesn't pull the lever, but even so the machine goes through its motions.
Continuity mistake: When Michael and Matt are in the jacuzzi quietly near the middle of the film, just before they start arguing, Matt picks up a wine glass and takes a sip and there are no suds on the glass or his hands. The next shot however, mid sip, his hand has suds on it and suds are all the way down the side of the glass. (01:17:30)
Continuity mistake: When Lee and Scott are in the hot tub, Lee's champagne glass is in his left hand, then it's in his right.
Chosen answer: Michael Douglas was not playing the piano himself. Special effects were used to digitally graft Douglas' head onto the body of Philip Fortenberry, a Julliard-trained pianist who also once played at the now-closed Liberace Museum in Las Vegas.
raywest