RE:Vision Effects (http://www.revisionfx.com ) has released ReelSmart Motion Blur and DE:Noise for Apple's Final Cut Pro X and Motion 5. 

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's no handwork involved, according to the folks at RE:Vision Effects. You can add as little or as much blurring as you need and even remove motion blur. Also included in the Pro version is a plug-in for Motion that allows you to blur with user-supplied motion vectors. The standard version is US$89.95; the pro version is $149.99.

DE:Noise ($149.95) handles spurious frame-to-frame defects ranging from fine digital/electronic noise to blotchy spots (e.g. dirt on the film). DE:Noise combines motion estimation techniques with 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 other defects.