Yes. I bought my brew kit from a man who received it as a gift but never used it. There were 3 cans of extract that had expiration dates over 9 years ago. As a total n00b and no money for fresh ingredients (though I did spring for a fresh package of dry yeast) I figured why not try one and see what comes of it? So I used one of the cans about 6 weeks ago along with some DME that I am assuming was about the same age, and got a pretty tasty beer out of it.
The can shows a pretty yellow beer, but my results are a beautiful dark reddish brown beer. I am not sure what it is SUPPOSED to taste like but the beer tastes like a strong brown ale with a coffee aftertaste. Since it turned out as good as it did I'll save and use the other two cans soon.
Go for it. Not much to lose as I see it, other than a bit of time and effort which to me would just be gaining experience and knowledge. Good luck with it!