I just bought a touring tandem. Mixture of excitement and embarrassment right now. It's in Devon, and we're planning to take the train out there, and ride it back (did the same ride, minus 30 miles, this time last year, except road from London to Devon. Will be nice to revisit it). Seems to be in good condition (recently upgrade to mostly Deore bits) and the right size for the two of us.
Heh. Next you'll be inventing tandem polo. :)