InterVideo has announced that WinDVD BD has been certified by Sun Microsystems for standard BD-J content playback. Here's part of their press release:
InterVideo, Inc. (NASDAQ:IVII - News), a leading provider of integrated digital and high-definition multimedia and audio/video content solutions in the PC, CE and wireless industries and a member of the Blu-ray Disc Association (BDA), announced today that the company's next-generation playback software, WinDVD BD(TM), has passed Sun Microsystem's TCK (Technology Compatibility Kit) logo program test.

"By obtaining Sun's TCK logo for Java(TM) technology, WinDVD BD once again proves itself to be the most advanced Blu-ray Disc software player available on the market," said Steve Ro, CEO of InterVideo. "Java is a key enabling technology for users' interactive Blu-ray experience. InterVideo has cooperated closely with Sun and is proud to announce that WinDVD BD is one of the first software players able to deliver full compatibility with all Blu-ray Discs featuring BD-J interactivity."
If you'd like to read more, InterVideo's entire press release can be found here.