I do what jweb does. Chopper mittens are a MN staple, so I don't think they are too uggo, but you can also spend a lot more money to get something technical that will probably be less warm. I find choppers are too warm above 5 degrees or so.
I agree that windproofing is where it's at. The choppers will keep the wind out.
Some of the tips here are actually really helpful for hands: http://greaserag.org/user_blogs/lowrah/toasty-tootsies/
Your goals with your hands should be to operate your gears and brakes safely and effectively (I can't use mittens with my STI shifters), and to keep your hands warm, but not so hot that you're sweating- sweat= cold and clammy!
This is an example of what I do for my hands, from early fall to OMFG winter:
Light wool micro-weight gloves- They are so thin they are almost see-through.
Cheap medium weight knit gloves/ fingerless knit mittens
The micro-weight gloves under the fingerless knit mittens
Windproof poly gloves
Micro-weight gloves under the windproof poly gloves- the gloves are super roomy, don't do this if your fingers are going to be constricted
Mittens with a leather top to stop the wind
Liner glove with the mittens,
Choppers and liner glove/ mitten