Cockpit digital cameras?

Anybody have any suggestions for digital cameras to take in the cockpit?

Looking for:
Small, so easy storage in the cockpit. Shirt pocket compatible. I've also
got a Powershot S50, which is too thick for my purposes, although length and
width is fine
Decent resolution (5 MP or above?)
Large storage card capacity (1 GB?)

Don't need:
Professional quality (this will primarily be for snapshots)
Interchangeable lenses
Bulk

Anybody already been through the process of evaluating and selecting who
would like to share their experiences?

Thanks,
Bullwinkle