We have see quite a few different accessories for the iPhone 3GS that are designed to help you record video, the latest one is the OWLE iPhone Video Mount.
The OWLE iPhone Video Mount is made from anodized aluminum, and it comes with a standard 37mm lens threading, as well as a 0.45x wide angle/macro combination lens, and a mini boom microphone.
Now the OWLE iPhone Video/Rig solves that problem using anodized billet aluminum, a mini boom-mic and a wide angle lens. Simply nestle your iPod inside the metal and silicone case of the OWLE and get ready to shoot the best iPhone video you’ve ever seen. Still shots turn out great as well.
We are not sure if the OWLE iPhone Video Mount will actually improve the video quality on your iPhone 3GS, but it will certainly look the part.
If you want one, the OWLE iPhone Video Mount is available for $129.99 from Think Geek.