Take a look at http://www.zoom.co.jp/english/products/q3hd/ for details.
We have just purchased this video recorder because we want to start posting a series of interviews on our blog, and we wanted something small and portable. We chose this recorder because of it's great reviews and because you can record decent audio without needing separate microphones.
We purchased the american version of the recorder so we also include a small travel power adapter, but you can also just run off 2 AA batteries (you need to supply your own batteries though).
If you want to rent it we will just download and remove any of our videos so you don't need to worry about accidentally deleting anything. You may want to clear the video before you return it :)
I'll post any tips and experiences here as we use the recorder more.
Online manual: www.zoom.co.jp/download/E_Q3HD.pdf