Digital Out: I can't get a signal from the A2000 to my Pioneer receiver. Does anyone else have this problem?
It's my understanding that most Sony sets won't output sound unless you switch off the set's speakers. I imagine it's the same with the A2000.
Motion artifacts: I was watching the Cubs on WGN HD and noticed a lot of MAs on the A2000. I know that ABC broadcast sports in 720P and it works wonders on MA but otherwise, are we stuck with MA?
Were you watching the game with an antenna or from cable? Over the air should be as good as it gets. If it's artifacting from the antenna, it's what they're sending, not the A2000.