Roundabouts with Weird Junctions and Lights

I had the misfortune to hit a few roundabouts on the way home from seeing 300 (very good by the way) and they were in a bloody awful state. One of them had lights changing AT THE WRONG TIME. Not very good at all. Another one had multiple exit points for various lanes which then converged rather worryingly. Whoever thinks these things up needs to be driven around them a few times to see how badly wrong their designs can go.