Other tiling wms can "split the screen". Of course, that's where the similarities end.

The problem with tiling wms on linux is that apps are not built for that model: to be stretched and squeezed like that. Notice how the video got real small and then took advantage of the extra space below the video? That's what we need linux apps to do before tiling wms will be great (well, and touch ui) for the average user.