I love to sit up on a quiet stretch of street or path and cruise along no-handed. I've always done so, on every bike I can remember. It's tougher when I have panniers, but it just takes a bit more attention to balancing with my hips. It's a nice, restful feeling for me. I usually do it when riding home from work (or wherever), and I turn off the busy street onto my quiet street, sit up, look around, and slowly pedal that last two blocks. Nothing flashy or speedy. Just being happy on the bike.