To all who care,
I have a MacBook unibody and am running Snow Leopard. I have experienced all the same frustrations listed above and on other related posts with respect to the Canon HF10 and Leopard/Snow Leopard. I will tell you that it made absolutely NO SENSE to me why Canon, a very Mac friendly company, would make these procedures SO difficult. Why would I purchase a compact high definition camera that fits in the palm of my hand if space saving and simplification was not a premium in the decision matrix of my investment? You're telling me I need to travel with a power cord, USB cable and an installation CD/DVD at every juncture of my video editing with cords scattered from heck to breakfast? Well, I don't, and Canon didn't intend on my doing that, either.
Procedure to be able to simply place your videos into a finger sized SDHC card reader after placing them on your SDHC/Class IV or higher/card directly from your camera:
1. Ensure your card in installed in your camera (duh)?
2. Turn Camera On.
3. Spin selector wheel to Video Playback.
4. Notice Four Options: Movies: Original (Built-In Mem), Movies: Original (Card), Movies: Playlist (Built-In Mem), Movies: Playlist (Card).
5. The work you've done all goes into the "Movies: Original" Locations. If you, like me, have popped out your card here and beat your head against your computer screen wondering why you can't get to what you know to be on the card, you've stopped here... Here, yes, you do need to follow the book procedure and play the musical cords and curse the poor ergonomic nature of this design.
6. **Clutch Move** Highlight the work you'd like to edit on iMovie in the "Movies: Original (Card)" section and press the FUNC. button.
7. **Clutch Move2** Select "ADD TO PLAYLIST", at which point you will be asked, All scenes on this date or simply this one scene. Do whatever you like, the camera means business. Confirm your request.
8. Check your procedure following skills by now moving to the "Movie: Playlist (Card)" category.
9. Whattaya know!!! Now something is there that wasn't before, that same video clip I've been trying to put on my computer now strangely exists in two locations on my camera... Well, just push the "I believe button" and trust me. When you extract your SDHC card and interface it with your computer, you will be very happy when you see iMovie respond to your request in familiar Mac style and fashion.
Hope this helps. Please let me know if any of you find success with the above procedure.
Godspeed, Mac friends,
Traveling Light