When Ray is hitting his shots, the Celts can beat any team, in any building.
That being said, i don't think they will come away with a W tonight.
The combination of the Pistons having their backs completely against the wall and playing at home will be enough to get them going and keep them going long enough to get the win. I also think that Flip will tap Linday Hunter on the shoulder early and often if the C's come out of the gates quickly, and that full court trap will get plaenty of extra energy from the crowd.
However, you cannot afford to just hand this game to the Pistons by playing "Powe for 20 minutes." If the starters lack energy, then yes, i hope Doc hits the trigger on Powe, House, ect. But the Pistons have proved they can beat us and play us REAL tough at home - a game 7 is by no means a guarenteed victory for us.