I was about to post exactly what BenKaye did.
"If I Can't Love Her" from Beauty and the Beast sounds like it has a ton, but it only has 2. But it sounds like a lot because the key changes are only two lines apart.
Oh yeah, and "Evermore Without You " from The Woman In White has a bunch. Half the time, I'm not sure whether a key change just happened or if the singer transformed into a completely different person mid-verse. He goes from a weird falsetto Michael Crawford impersonation to a big deep voice to an even bigger, boomier sounding voice to the weird Michael Crawford impersonation again.
In my pants, she has burst like the music of angels, the light of the sun! --Marius Pantsmercy