Nuclear, which I pronounce "nucular", in deference to the President. Of course Ed Teller said "nucular" too, and no one called him stupid.
Say, as long as we're mocking people for mispronouncing simple words, I hereby cast a smug glance down my nose at every single broadcast journalist for saying "terrists" instead of "terr-or-ists." Seriously. You've had five years to practice. Get it right. Then again, the problem would melt away if we followed Rick Santorum's advice.