GeekGamer.TV

Free

available in channel store

code ggtv
https://owner.roku.com/Add/ggtv

beta codes still appear to work but not recommended
Code yd4sc

https://owner.roku.com/add/yd4sc

http://www.geekgamer.tv/

free beta trial of Geek Gamer TV's new roku channel

confirmed code/Add link 8/27/2013