The original Crossbar theme from Bplay caused quite a fuss. It was the bleeding edge of theme design in its day and even got Bplay in trouble with RIM from what I remember. Now Bplay has revived the theme with a new Crossbar 2.0 incarnation that looks very slick with a new background and slightly different icons from what I can tell.
If you were a fan of the first theme this might be worth a shot. Still at $6.99 for the Crossbar 2.0 theme Bplay’s prices are on the higher end.