I wonder if MI6 is affected by budget cuts and economic downturns? If so, they might want to look into this Video Camera Watch at Thanko Japan. This budget watch packs a compact video camera capable of recording AVI video at 352 x 288 resolution through a tiny, inconspicuous, pinhole lens mounted on the dial.
The built-in 4GB of memory should get you a couple of hours of super-secret filming while people around you notice your tacky, diamante-studded, synthetic-strapped timepiece and seriously question your taste. If this is a non-issue, head on over to Thanko Japan where you can pick one up for ¥13,800 ($150).
* Apparently it will only work on XP and Vista, so everyone else will just have to make do with a Super-Secret Spy Lens.
Sources:
Thanko Japan (Translated) via Akihabara