I find that the vast majority of for example romantic comedies are quite poor filmatic wise. Most of them have similar, unoriginal plots, similar stupid humour, and touch on the same themes. They're usually not ground breaking, revolutionary movies that introduce new, unexplored ways of story telling and camera usage. Still, I often find them quite entertaining. Sometimes is nice to watch a stupid feel good movie, have a few laughs and never think about it again.
I'll check out the magic roundabout.