Well, i kinda like em.
I'd much rather go round a roundabout than sit at a friggin stop light or 4 way stop sign where everybody has to guess who's going next because people forget what you learned in driver's ed...first come first serve, if it's a tie, the person to the right or general courtesy.
Of course, i've never driven in one during rush hour or in England.
It'll be a while before i see one in my town though. We've already got a stop light and 2 stop signs.
Ha! Love the small town life.