If you're looking for a thorough walk through the latest stem cell treatments, check out the huge package of articles that Forbes just posted. Written by Matthew Harper and Robert Langreth, it's a great look at how far stem cell treatments have come, even with the government restrictions that researchers in the US have had to deal with. Short story:
Link: Special Report: Stem Cells Get Real (Forbes)
Slideshow: 12 Stem Cell Revolutionaries