The closest I have come to doing that for real is going up to Whitehorse in Canada. I was hoping to go again this year in August. I still could — I have the vacation time and the money — but by not going I save nearly $1600. So far, I haven't cut back much on my spending despite the economy; unless I stopped spending entirely, none of it would make much difference one way or another if I lost my job, which doesn't seem likely at this point anyway. But $1600 is a month's rent and food with a bit left over! Cutting out this one expenditure does make a noticeable difference in my savings.
Maybe I'll just take $100 of that and drive somewhere interesting for an overnight trip this summer.