With Kodak's Digital GEM Adobe Photoshop plug-in.
Whether your digital images are from a film scanner, flatbed, digital camera, or CD, the Digital GEM plug-in gives you an easy and effective way to reduce noise and grain, resulting in a more visually pleasing image.
It looks good.
Will post an update after I tried it (Note: the installer doesn't select the correct Application folder). If you are seduced by his little gem, it will cost you USD 80.00
Picked up from MacNN.
Obviously, the results depend on the quality of the original (hmm). Nevertheless, my first test was quite successful: