Well, I now have video of a rather cute mouse entering...and exiting...the Havahart trap. I ordered a large one a while pack for a pack rat in my garage, but never used it because it had left before the trap arrived. This little guy/gal just walked right over the trip panel without making it budge. I'm going to have to read the instructions again and see if I can adjust the sensitivity of it.
In related news, the mouse now has a pretty decent supply of peanuts and raisins to keep it happy...