"Durango, Englewood, Grand Junction, Monument, Louisville, Lafayette, Trinidad and Silverthorne have enacted moratoriums. Castle Rock's City Council placed an outright ban, saying marijuana's use and sale remain illegal under federal law. Superior and Broomfield said the same for their bans."

-I know there's more towns who have enacted moratoriums or bans, but I can't recall any right now.

Fort Collins will vote tonight (half way down page):
Aurora puts 6-month moratorium on medical-marijuana dispensaries - The Denver Post

Greeley (near end of article):
The Denver Chronicle: Fort Collins to Consider Medical Marijuana Moratorium