Continuing with roundabouts, I "love" some of the new roundabouts in my area. The city didn't get rid of the 4 way stop signs, they just added an island in the middle of the intersection making it near impossible for any vehicle larger than a Scion IQ to go around the roundabout without clipping a curb thus yielding the worst of both worlds -- a scenario dear to a city planner's heart.
Anyone else remember the Mythbuster's episode
MythBusters: Four-way stop vs. Roundabout? They at least had the common sense to build their roundabout large enough to be useful.