Chickadee, relax, your hostas will be fine as will most other perenials.
All this snow is the best insulation for them. I agree with Ann, don't go out and remove snow. Nature will take care of things for you.
TCS, You'll love Gunther. He is a show stopper. I got mine from Dawn's Bloomer's in Independence Iowa. It has maintained its streaks perfectly. You can probably pay less for one from someone else and in some cases pay more, but I really can't stress how good of one got from Dawn's.
I've got three of them now and the only one that is really worth a darn is the one I got from Art Jacobson at Dawn's Bloomers.