Mine was "hitherto." I pronounced it "hit-hurt-oh" once. Once. (It's "hither too" if you didn't know.)

Here’s a sizable list of words like that: http://english.stackexchange.com/q/1431/1506

Oh... today I learn.

I still thought that until just now - that there were 2 different words: epitomy and epitome; epitome being stronger: suggesting some kind of singular platonic ideal the former meaning just a good example of this kind of thing

Just as I used to think misled (miss-led) and misled (my-zled) were 2 different words - the latter implying an element of malice

'cache' being pronounced 'kash', not 'kaysh' is one that's still wrong in my brain.

Oh, don't feel too bad; a few weeks ago, my wife had lunch with the Ivy League-pedigreed nth-generation CEO of a reasonably large midsized company who used the exact same mispronunciation. Paris being worth a mass, she chose not to correct him.