Originally posted by Alex:The "strange guitar" was a resonator guitar, just as you said. The most famous manufacturer of reso guitars is Dobro (which is a subdivision of Gibson nowadays). These guitars don't use the body as main sound source but a single- cone or three- cone metal resonator. This makes the guitars sound very metallic. In 99% of the cases reso guitars are used for slide playing with open tuning and a bottleneck. A lot of reso guitars are even factory- made with a square profile neck, so that you can only play them laying on your legs - similar to a lap steel or hawaii guitar.
Resonator guitars are often used for Delta Blues and other kinds of acoustic blues music. This works especially good when combined to a normal steel- string acoustic guitar and / or a bluesharp. I recommend listening to "Trimmed and Burning" and "Slow Burn" by Darrell Mansfield and Glenn Kaiser.
Alex
Cheers for the response Alex, great stuff, really informative

Re. other Alex's question concerning Christmas etc., like I said earlier, with any luck I might be the recipient of an Epiphone Explorer (natural finish, I don't do 'ebony'!) come the 25th but I'm not expecting anything, I never do - however, it's the only thing I've actually answered with as far as ideas go whenever people have quizzed about whether there's anything specific I'd be wanting as a present for Christmas; I just know I'd be one step closer to dying happy if I were to get an Explorer sometime in the near future...