When accounting for these things in a total comp calculation, I do it something like this:
$comp = (1 + 2 + 3 + 4 + 5) - (6 + 7 + 8)
where
[1] Salary / cost of living index for area
[2] adjusted value of health care plan
[3] adjusted expected bonuses/profit sharing
[4] retirement contributions per annum
[5] dollar value of stock options given * chance of options vesting at some worthwhile value (tricky to calculate for startups)
[6] expected hours per week over 40 * .025 * [1]
[7] estimated value of environmental and other stress
[8] cost in time, gas, stress, vehicle wear & tear, inconvenience of commuting
Now, it may well be the case that other companies that you looked at had large negative values of 6 & 7, which makes Fog Creek look great in comparison, but I think that as a profession we're screwing ourselves in the long run if we think about uncompensated overtime as the norm and working normal hours as some sort of bonus :)
If they're exceptional, they can do better - but they'd have to be exceptionally clueless not to be aware of that. I highly doubt any CS student in 2012 is somehow unaware that the market for their skills is sizzling hot at the moment.