Bloody good fun! I've been thinking lately about resurrecting one of mine to get to work on...
Haven't ridden in about 4yrs now, but until then it was roughly 50km a day on an MTB based hybrid.
About 6yrs ago I bought a bike that I'm not sure you would have seen up there in the UK

An Avanti Cruise-matic... Midsized commuter/light MTB frame, V-brake front end, roller-disc rear (tweaked the torque limiter to give consistent braking effect) and a Shimano Nexus 4D trans... Thats a 4 speed internal-hub gearset, shifted automatically at preset speeds by a small servo - or if you like you can flick the selector around to "M" and thumb your way up and down the ratios via the touch pads on the handlebar console
Very smooth and quiet to ride... quite un-nerving if you've only ridden conventional derailleur or single-speed bikes.
I'll post some pics up tomorrow if anyone is curious
