Way back in June 2008 Joe Albahari gave a presentation on the upcoming parallel programming features in .NET 4.0. I have finally published the recording of his session here. Just for reference the Parallel Framework encompasses PLINQ and is sometimes referred to as the TPL (Task Parallel Library) or System.Threading.dll
Sorry about the delay in the post.
Joe Albarhari Parallel FX and PLINQ videos : 6 videos @ ~10min and 40-50MB each.