Sony's TG3 (TG1 in the US) is pretty small. Better quality build and pictures than the Aiptek, but at a higher price.
Andrew.
Another vote for the Sony HDR-TG3. The picture quality is much better than the budget HD cams (the Aiptek or the Sanyo). I bought one for my wife and although she is a techhie luddite, she is using it with no problems. It is beautifully screwed together and with a titanium casing, should be tough as well.
One word of warning, AVCHD files are a real problem if like my wife, you are using pre-Intel Mac technology (G5 iMac). There is a program called Voltaic which imports these files onto PowerPC computers for editing on say iMovie or Final Cut Pro but it takes hours and hours to run the conversion. The resulting .mov files from 1080P video are enormous - about 10GB+/hour of video. I have been converting the files to .mov on my Macbook and then putting them on a 2.5" external HD for my wife to watch on her iMac. The quality of the end results on a large full HD TV are stunning for such a tiny camera.
The 4.5 Megapixel still shots from the Sony are OK for snapshots and look fine on screen but will struggle to print much larger than A5. However as I am comparing them with the images taken by my Leica M8, I may be being a bit too fussy.
Wilson