Yes...GUI...pronounced "Jewey". In case it wasn't obvious, my outrage was in jest...
Most who pronounce it say "gooey." But the G in GUI represents another abbreviation, GIF, which some people insist should be pronounced "jiff," which suggests that "graphic" should be pronounced "jirraffic."
Or Girraffic. As in "Girraffic Park".
Of course, let's not leave out the delicious GUI Duck: