As I mentioned in the Computational Photography thread, I'd really like to see someone port fotoxx to the N900. It has cool features like HDR and panorama autostitch.

The problem is not combining the pictures, but forcing multiple exposures of the same scene as quickly as possible without messing about with the settings (which, currently, on the N900, involves poking around on the touchscreen, and is guaranteed to move the camera).

EDIT: timsamoff and I did a lot of N900 photography in Amsterdam, and we agreed that, while the N900's camera is very good, it is very hard to get acceptable images from HDR scenes.

Example: