Sittiphol announced that he'd have Mobitubia available for download today, and he has fulfilled that promise. Mobitibia is the Youtube client developed by Sittiphol Phanvilai that was awarded the grand prize of $10,000 in the Open C Challenge.
Originally Sittiphol announced that he would cancel development of the application but he's now decided to carry on, which can only be a good thing.
Upon downloading it (Thanks Bery) I immediately fired it up and tried watching some videos, unfortunately, the video/sound skips towards the beginning unlike emtube. This might just be for me though, so I suggest you try it before knocking it. Download it here.
P.S. When you open the application you'll be presented with a screen that looks like this:
Just press the middle button (or any button?) to get to the menu.