I think the take home message here was
There is some evidence to support the use of marijuana for nausea and vomiting related to chemotherapy, specific pain syndromes, and spasticity from multiple sclerosis. However, for most other indications that qualify by state law for use of medical marijuana, such as hepatitis C, Crohn disease, Parkinson disease, or Tourette syndrome, the evidence supporting its use is of poor quality."
Medical Marijuana certainly seems to be supported strongly by chronic pain groups, however there's a lot of hype around other indications which don't have the evidence to back it up. Hopefully better quality trials will emerge to help clarify marijuana's uses. For me there seems to be a whole bunch of hype around epilepsy research, i'd be keen to see whether marijuana in juvenile epilespy is substantiated.