In the article: Parsing Log Files with F#, MapReduce and Windows Azure, Noah Gift discusses how to use F# with Azure to Map Reduce data.  This article has code sample and shows how F# is comparable to python.  Other important items discussed in the article is how to use the interactive pane in Visual Studio, and how you can use powershell.  MapReduce using F# in Windows Azure, along with separate code samples is discussed.