Blu-ray uses Java and supports Linux.
I have been canvassing HD-DVD and have seen unsold players and movie
titles here in NJ. Since Toshiba is widely-held to be subsidizing the
cost of HDDVD, you gotta wonder how long a company like Toshiba (which
is much smaller than the manufacturers who are shipping Blu-ray like
Samsung, Sony, Panasonic, etc) can last ;-)