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:
Quotations (with a succinct summary of the mechanism!)
Ray Tracer (a beautiful gem of F# coding)
as well as a few others.