That's way bad. Your laptop should have shut down before getting to that point if it was pure heat issues, though, unless that setting was turned off in the bios. Anyway, take the hdd out and see if you can salvage your files, because even if it was a battery leak you're at the point where you can't do anything about the rest of it now. Oh, and if there does seem to be any signs of battery leakage be very careful with it.
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"Principally I hate and detest the animal called man, although I heartily love John, Peter, Thomas and so forth" - Jonathan Swift
BT with the victory!