Here’s an interview with John Lam about IronRuby and Silverlight.

A few notes: IronRuby, Microsoft’s implementation of Ruby, is only a couple of months old. The major drivers are getting Ruby running on mature runtime and having leveraging to the security models in the .NET CLR and Silverlight as well as access to the .NET Base Class Libraries. It’s going to be released as Microsoft’s version of an open source license (MSPL).