I always liked the weathered-wood look too, and spent one day driving the back roads in my area looking for old barns to tear down. In just one afternoon, I've lined up 4 barns that the owners don't want and said I could take whatever I wanted, as long as I didn't make a mess. One abandoned farmstead has one large barn, a small two-car garage and several other sheds that all have the weathered tongue-and-groove siding that I think will look great in my shop. I was just out there over the weekend finishing up stripping the garage siding off. Here's the Before and After shots.
To make this job easier, this weekend I'll be purchasing a Dewalt reciprocating saw (Model #DC385K) which has a four-position blade clamp to allow for flush cutting. As long as I have access to the inside of the wall, I'll be able to use this to just run down the joists and cut the nails holding the siding on, making this job MUCH faster and with a lot less damage to the wood then trying to pound them out from the inside.