All my singletrack has been on a late 90's Cannondale rigid, tricked with mostly Deore componenets. My poor one inch headset needs replacing pretty badly, but it's still my favorite bike. I have a Cannondale touring bike with a head shock for commuting and touring/camping, but after these last couple of years exploring backpacking more, a little offroad camping would be fun.
Maybe a good use for the old chromoly full suspension, coil-over-oil Pro-flex I used to bomb logging roads with, that I really don't ride anymore. I leave the carbon fiber for the road, with a Domane 4.5.
I really want a fat bike, but I hate the cold too much, so I know I'd never ride it to its potential. I suppose offroad "touring" would be better on a 29er, but I sure like my 26 for technical, especially climbs, but perhaps that's the topic for another thread.
...and I still don't know Judy.