Looking at the various implementations of the Unity3D engine, perhaps the biggest of them is Cartoon Network's Fusion Fall. It is rather cool what a big budget can do with the engine in creating a cell-shaded world which is rather engaging for an in-browser MMO 3D experience. We cant get to it here in Oz, so I just have to make do with Video and Pics as below:
[Screenshots from Fusion Fall via Miguel de Icaza's blog]
I really like cell-shading, it is rather like comics merged with gaming - they tend to get heaps of style at the expense of realism = good.