there seems to be about 3 zillion interactive play-a-long/sing-a-long/dance-a-long type dvds advertised on tv at the moment. who stands to gain? is it
a) the content license holders?
b) is it the technology makers?
c) is it the dvd retailers?
d) nobody as they will all end up in the 50p bin at woolworths very soon?

press red for a , green for b , yellow for c or blue for d :))

http://www.interactivedvdstore.com/index.htm

http://www.zoo-tech.com/

a couple of links. can't seem to find any other companies providing the technology.