Tandems are Soooooooo cool.
Everyone will tell you that as you ride down the road. People shreik at you, cheer, clap and sing to you. Everyone from small children to old chaps smile at you. The most common comment is a nudge to a partner and 'we need one of those!'
We have never had a single non-positive comment, even the teenage lads at the cycling club were excited about it - one jumped on and took it for a spin around the carpark with the lad stoking! TGL has done a warty stoking Wow's tandem and a 63 mile day with ours loaded for camping last year - at the end we were flagging, but he was singing! It's brilliant.