RE:Vision Effects (http://www.revisionfix.com) has released ReelSmart Motion Blur (US$89.95) and DE:Noise plug-in products ($149.95) for Vegas Pro by Sony Creative Software. 

ReelSmart Motion Blur (RSMB) automatically adds more natural-looking motion blur to a sequence. Proprietary tracking technology is at the heart of RSMB, so there is no handwork involved. You can add as little or as much blurring as you need and even remove motion blur.

DE:Noise handles spurious frame-to-frame defects ranging from fine digital/electronic noise to blotchy spots (e.g. dirt on the film). It combines motion estimation techniques with feature-sensitive, edge-preserving spatial filtering methods to reduce the visual impact of various problems such as: noisy video (that can happen with low-light capture), excessive film grain, CG renders affected by ray-tracing sampling artifacts, fingerprints and dust captured during film scan/transfer and printing, snow, drop-outs and many other defects.

RE:Vision Effects plug-ins are available for Sony Vegas Pro, Adobe After Effects, Eyeon Fusion, Apple Final Cut Pro, Apple Final Cut Express, The Foundry's Nuke, Adobe Premiere Pro, Autodesk 3ds Max/Maya Composite, Avid editing systems, Autodesk Systems (Sparks), Autodesk SoftImage, Apple Shake, Quantel genQ and others.