shopping in Minneapolis
I see this thread is from 2005 but just in case someone else stumbles upon it, here goes:
Try Askov Finlayson and Martin Patrick 3 in Minneapolis' north loop area. MP3 has hard-to-find (in the Midwest) brands like Naked & Famous. AF is more lumbersexual, and has their own clothing brand as well as others of quality. Top Shelf in Uptown does bespoke suits and shirts; Phenom, also in Uptown, has streetwear. For classic menswear, try Heimie's Haberdashery in downtown St. Paul. I haven't shopped at BlackBlue in St. Paul, but their site shows denim, flannel and boots, great for a Minnesota winter.
That should hold you for awhile.