The second was achieved though the emit settings in the materials menu.
If you ask me, the first effect looks better on its own but doesn't work when you actually add it to an existing model. This is because the node method just creates a fancy effect, it doesn't actually interact with the rest of the model by creating shadows and highlights and such, thus diminishing its effectiveness somewhat.
Working with the emit settings, on the other hand, does interact with the rest of the model. It turns the selected material into an additional light source, creating the shadows and highlights you'd expect. It does give the final render a much softer appearance though.
I have tried combining the two effects but I haven't been able to make that work so far. I'll have to play around with it some more.
