I used to work with Mukund (Rangamani) and Veronika when I was doing my PhD at Durham Uni (2004-2008) -- it's great to see the work they and others are continuing to do on this. It formed the basis for my thesis (http://etheses.dur.ac.uk/2906/), and Anti de-Sitter spacetimes allow for some great visualizations (I spent much time working in Mathematica to produce the one shown in the slide here: http://bethnalgreenventures.com/2013/08/05/guest-blog-from-m...).

You also learn something new everyday - I'd never come across the term "Fisheye Universe" for AdS space before! :)