I checked out Frenzic just a minute ago, a wild OS X-only puzzle game from ARTIS software and IconFactory. The $14.95 shareware game basically blends the pie wedge-filling side of Trivial Pursuit with Tetris in a dance-hall style. All you really need to know is that you'll have fun, and the graphics and sound facilitate your addiction.
If you'll excuse me, I need to get in another round.