ever heard of John and Hank Green? John Green publishes YA books—very controversial books but good with great messages for contemporary teens who are not easily offended—and he and his crazy brother hank do Brotherhood 2.0 and Vlogbrothers.
Here's the QA Video about them.
and here are some funny DFTBA moments:
you can also join the nerdfighters website here: http://nerdfighters.com