Twitter Image Feed is nice. The folks at the next app down in the blog could learn a thing or two from them. Just give it access to your twitter details and it will provide you with a nice listing of images that your friends have posted. They make their money from a couple of unobtrusive adverts, unlike Twitlamp, which wants to throw warnings at you all the time. Twimfeed doesn't do the video/audio thing yet, but hopefully they will.