Be like many others - look at this as a golden oppoutunity to average down yet again. In fact, the rule is "the lower it goes, the more you buy (or at least you say that you buy).
Once this is done, you have but a single problem - what to do if the stock doesn't recover until 2010. Your response then is that you are a value investor and you are willing to wait for as long as it takes to reach your average cost and sell.
If this approach doesn't suite you, then your a moron who should invest in index funds.