Lighters Speakers

Hello colleagues

A simple question, who do you consider from Russian speakers on mobile platforms (iOS, Android and Windows Phone) the most interesting and “incendiary”? Or, if you have not seen their speeches, who would you like to hear?

And what would be more interesting for you in their story, how to invent, how to develop or how to earn? :)
')
And whose style and content of speeches are interesting from Western speakers? Maybe immediately with links to youtube?

Thank :)

ps Why in the blog "I am promoting"? Because soon we will announce a large mobile applications forum with cool speakers (I hope you will tell a few of them) and with free participation.