I've signed up for FameLab. I think you should too. Being able to handle yourself in front of an audience is a terribly useful skill. If you are going to start, it's best to start small. FameLab gives you three minutes to fill with something scientific that you feel passionate about. The Hull heat is on the third of February 2016 and you can find out more and sign up here.
I'm going to speak about why Computer Science is the most important subject of all. Should be fun.