IEEE exhibition
My favourite presentation was MPAWA, an online payment gateway built on MPESA, done by Martin Kasomo. I'm eagerly waiting to see it fully implemented, as it is something I have always wanted to see out in the market and have not had much time to work on :).
It's also something close to that Whiteafrican has talked about, only that it is not operator agnostic..
All in all, there is a lot of interest from large players (Microsoft, Oracle, Celtel, Safaricom, Google had representatives) in what is happening in universities, which can only be a good thing.