A long, long time ago.
Basically, you have the junfrau ski area in the center (they have a train as a lift- pretty cool), and then two smaller areas on either side with I think a bit more gnarly terrain (cant vouch for it since I havnt skiied there).
I would say the coolest place to stay is vengen- its big enough to feel like a real town, but it still has no roads to it. I dont remember the name, but we stayed in a great place that was just to the left of the lift (the one that goes into wengen). At the time it was dirt cheap because the lift was broken- but Im sure it would be fixed by now.
Overall, a great place to go skiing