The Twin Cities are actually a very nice place to live, save for all the snow; however, the winters over the last three or four years have been mighty weak comparatively. The music scene in Minnesota is awesome, lots of indies, lots of larger concert venues (though Dave Matthews hasn't been here in about 8 years >:( ) and lots of awesome coffee shops all over. The chic place to be in the area is by most, considered to be the Uptown area in Southeast Minneapolis, with many trendy restaurants, nice cars, and beautiful women.
The Twin Cities is also the name used by people who don't realize that there are actually two cities up here (and for those of you that don't already know, the capital of Minnesota is St. Paul, NOT Minneapolis (and yes, I have had people think the other way, as well as people who'd never even heard of St. Paul. Can you imagine?!?)).