Hey there. We are a Roku Developer. We are currently working on two channels as we speak. One is a sports-related channel that we aren't at liberty to speak of at the moment, and the other is for a financial research firm utilizing 4 levels of navigation and other complex features that extend beyond the limitations of any other channel out there.
Check out our latest blog entry regarding custom roku development
http://blog.floatleftinteractive.com/how-do-i-get-a-custom-channel-on-the-roku-player/. Please send us an email if you are interested.
Have a great night!
Float Left Interactive
PS: I will send an email as well. Thanks!
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Float Left Interactive Team
www.floatleftinteractive.com