LEGO stores around the country feature "Window into the community" displays, where LUGs can show off their MOCs. BayLUG, the San Francisco area club, has had several micro-themed displays. In January, 2006, they had a San Francisco theme.
In May-June, 2006, it was micro space (follow the link for much better close-up pictures of individual elements).
Recently (when?) it was suburbs (plus Coit Tower).