Outside Detroit, huh? That narrows it down...
Hows about this: If you're going to Windsor, try the [ulr=http://www.artgalleryofwindsor.com/]Art Gallery of Windsor[/url]. Not exactly "off the beaten path" for Canadians, but it probably would be for Americans. I dunno what they're showing in November/December, but we went a couple months ago, and they had some cool stuff for a small gallery. Plus they're in a brand new building right on the river, with a great view of downtown Detroit. Not far away is
ArtCite, a small commercial gallery. Again, I'm not sure what's going on in Nov/Dec, but they've usually got some pretty avante-garde stuff. Round it out with a visit to the Mini Restaurant just up the street, the best of Windsor's many Asian restaurants.