You can read to the bottom if you want, but if you're in the market for some insulated pants BUY THESE NOW! On sale for $69.99 you won't find a better deal on a really great pair of pants.
Eddie Bauer's Powder Search Pants have a great look and fit, are waterproof and highly breathable, feature crampon patches and belt loops, and just wear wonderfully. One feature that should be copied by all pants manufacturers everywhere all the time is the pair of hook-and-loop tabs, one on each side of the waist, to adjust the waist size. Because, you know, waists change...
Two zipped handwarmer pockets and a zipped thigh pocket are the perfect amount of carry space, and inside the bottom cuffs are built-in powder gaiters. There's even a little D-ring for your powder pass. A hang loop on the back makes it easy to put up wet, another small but everybody-should-do-this feature.
I've been wearing them in below zero temps over boxer shorts and they are the warm fuzzy bomb. I haven't had any problems with overheating, but if I did I'd just unzip the inner thigh vents and bam! Bob's your uncle. The only thing I'd change is to add some suspender loops and an extra snap to the gaiters so they'd cinch tighter around smaller non-ski boots, but don't let that stop you.