Experimenting today with the Canon PowerShot G11 and an R72 infrared filter.
Ironically, my 12-year old son was watching me take the stills and said, "Dad, you should do an infrared video."
Didn't know if that was possible, so I made a few changes to the settings, (B&W color setting, ISO 1600, Movie mode) and voila! It worked! Pretty damn cool actually...
IR Test Drive video
Out of the mouths of babes....
- Canon PowerShot G11