I wouldn't say nice acting to Garrett Hedlund, but the rest were superb, especially the guy that played Castor.
I also saw Legacy, and it was a worthy sequel to its predecessor indeed. I especially liked Disc Wars, Lightcycle wars, and the part where Clu2 picked up the little sculpture of Bit. It was disappointing we didn't see much of Tron, we only saw him as himself for about 3 minutes, the rest we saw him as (SPOILERS HEADING YOUR WAY) Rinzler.