I came across Cellblock today. This is sort of a combo Flickr and YouTube with a cell phone twist - you can submit your photos and videos via your cell phone, and they appear "instantly" on your Cellblock site. From what I can tell, you can't stream live video like you can with PocketCaster, though.
To use this with your cell phone you need one that can send photos and videos via email. I'm guessing that most, if not all, camera phones can do this but since I don't have one I'm not sure. What would be the cost involved? Are you charged a data fee (as opposed to using your plan minutes) when you do this?
You can also use your computer to add content to your Cellblock site. While this product doesn't really seem to do much that can't be done other ways, it might be appealling to have one site that will accept photos and video from both a cell phone and a computer. (The usual caveats- privacy, etc. - apply, of course.)