At a recent Skills Matter event in the UK Goyko Adzic presented for over an hour on Space Based programming in .Net. The slides are embedded below, but as this blog is syndicated and sometimes the slides get stripped out, you can find them here.
You can also view the Video of the presentation directly on Goyko’s blog here.
As a follow up to GigaSpaces XAP for .net I’d suggest you look at:
Space Task and Distributed Space Tasks also known as Map Reduce in XAP.NET