George Harrison's Beware of Darkness. It's the second chord of the verse: First a G7 (that's a flat seventh) and then a G#m7 which spins the whole thing to the key of E. It's been done by others, notable Todd Rundgrens' Love in Action chorus. Always sounds so unique.
There are quite a good number that I like. A Cottage For Sale by Sammy Fain, A Garden In The Rain, If I Didn’t Care. The list goes on and on. Many of those great old songs from the 20’s, 30’s and 40’s and in the Great American Songbook modulated to different keys and back again. Much more interesting to play and listen to than three or four chord songs.
With some trepidation …
The minor third key change for the sax solo in “Hungry Heart”, then back down for the rest of the song.
The half step key change coming out of the middle eight in “I Got You Babe”.