I nominate three - add yours and debate:
Outside of any Cinnabon store in America.
The coffee aisle in any grocery store.
Especially if they've got one of those grind-your-own coffee things.
And I don't drink coffee.
Freshly cut grass.
[img width=450 height=337]http://www.inkycircus.com/jargon/images/grass_by_conformity.jpg[/img]