.NET MapReduce Cheat Sheet
Just starting to pull some thoughts and links together...
http://hadoop.apache.org/docs/r1.2.1/streaming.html (notes from Wes; this is for Hadoop 1, Hadoop 2 has some library gaps for on Prem Windows M.R.)
http://www.nuget.org/packages/Microsoft.Hadoop.MapReduce/
http://blogs.msdn.com/b/data_otaku/archive/2013/09/07/hadoop-for-net-developers-implementing-a-simple-mapreduce-job.aspx – part of a bigger series at http://blogs.msdn.com/b/data_otaku/archive/2013/08/14/hadoop-for-net-developers.aspx
http://hadoopsdk.codeplex.com/
http://www.amazedsaint.com/2013/03/taming-big-data-with-c-using-hadoop-on.html
http://hortonworks.com/blog/hadoop-sdk-and-tutorials-for-microsoft-net-developers/
Good problems to solve (and blog about) with pig; http://hortonworks.com/community/forums/topic/loading-a-fixed-width-file/