Jon Harrop has been busy lately.  He's just uploaded his latest F# demo, this time a minimal DirectX demo (he's working on a WPF one too I hear). He's also started a blog on BlogSpot, devoted to F# programming news and snippets.  Here's the RSS feed.  Some recent articles:

DirectX Demo

Quotations (with a succinct summary of the mechanism!)

Ray Tracer (a beautiful gem of F# coding)

as well as a few others.