According to this math link, there's
still some discussion over what the result should be.
Update: it starts with
According to some Calculus textbooks, 0^0 is an "indeterminate form." What mathematicians mean
by "indeterminate form" is that in some cases we think about it as having one value, and in other
cases we think about it as having another.
which is
slightly different than what ariels says. I guess
I think 1994 is recent, but the real discussion took place
in the 19th century...
However, read the link, don't let us read it for you.