Rok (currently only in the UK but keen to expand in other countries) has a beta version of something refered to as Rok Bet, which works with its 2.5G mobile TV service. “The programme could be a live horse race such as one taking place currently at Royal Ascot...Over the top of the image, Rok can now provide a simple menu system. Using the handset’s star (*) key, the user can then navigate through menus and place a bet. Instead of a horse race, the stream could be a live image of a casino roulette wheel, for example.”
Related stories:
--Rok Offers Free Mobile TV Trial
--Redirecting TV To Mobile Phones