Here are two more examples - the words "often" and "nuclear".

Peter Jennings says off-ten. I was taught in school that often was an example of a word with a silent letter, pronounced off-en.

"Oft" is an Old English usage.

I avoid speaking the word and say "frequently" instead.
_

Our President says nuke-you-lure. Anyone that's ever taken chemistry or physics and knows what a nuke-lee-us is, says nuke-lee-are.

I hope he doesn't push that button!