I could recommend a few cameras
If you are not looking for HD but high quality footage the panasonic nvgs 400 or 500 would surfice as they are 3ccd cams
In terms of high definition i would recommend the Sony HDR-HC1E Handycam, its a highly portable semi pro cam with a great deal of manual features and shoots at 1080i. In terms of external mics for interviews get a uni directional microphone, rode is a good brand.
Happy to help
calum