Digital TV software Applications

Hello every one.
I have just joined sitepoint.
Most African countries are doing away with analogue TV transmissions to Digital transmissions.
What is the best Programing language to use to code applications that run on such a platform?

Uhhhhhh…you don’t run applications on a transmission standard. It just transmits data.

Well, What i really meant was how best can one utilize the Digital TV (DTV) facility by coming up with something that subscribers/ viewers can optimize.

What content providers can offer through the digital TV equipment since a law has been passed here (Uganda)that every homestead should switch to DTV network by December 2012 rather than the analog that has been in place .
Thank you