Pro Pinball: Big Race USA works mostly well under Crossover Games v7.0 (tested on Mac). There are a few bugs, as follows:
a: The default flippers frequently stick in the "up" position.
b: Nudging the table causes the screen to go black, after which you can only see the ball itself and any areas it crosses over as it crosses the table. You can avoid this artifact by going into the Graphics Options and disabling "Nudge Scrolling".
c: You cannot customize the controls. Attempting to do so locks up the screen. (see Tips & Tricks for a solution)
d: On startup, the splash screens/logos that normally pop up a few seconds after each other are sped past on the screen extremely fast.
Aside from this, the game plays very nicely. I'm running this in Crossover Games v7.0 under Mac OS 10.5.2 on a Mac Pro, 2 x 2 GHz Dual-Core Intel Xeon with 8 GB RAM.