My "Marijuana Solution" is quite simple. Make it illegal to sell, illegal to buy, but make it LEGAL to grow and smoke on your own property. If you want to smoke, you can smoke.
I like this idea and I would even take it one step further. I can't think of any drug which is particularly dangerous in its natural form. People have been chewing coca leaves for thousands of years with no overdoses or other major health problems but when we started synthesizing out the active ingredient we get a dangerous substance. My proposal is that if you can grow it you can have it (Unless it might otherwise pose some sort of an agricultural problem to the region). The only caveat would be that you aren't allowed to process the plant, except for drying. Then the government wouldn't get involved unless it became a matter of trafficking or manufacture.
Also, we really need to get rid of mandatory minimums, property seizure before being convicted of a crime and no-knock warrants. But those are a different issue.
We need to shift our view away from punishing drug use to TREATING drug use. The War on Drugs has clogged our prisons with people that shouldn't be there.
Amen.