There are so many! The guy had an amazing range.
Hey Jude (beautiful)
She's Leaving Home
You Never Give Me Your Money (love the ragtime bit)
She Came in Through the Bathroom Window
Golden Slumbers/Carry That Weight/The End (great show of range)
Kansas City/Hey-Hey-Hey-Hey! (love the scratchy vocals)
The Night Before (more scratchy vocals)
I've Just Seen a Face (his delivery is very cool, almost as fast as Dylan's in Subterranean Homesick blues!)
I've Got a Feeling
Penny Lane and Hello Goodbye (is his voice sped up in these at all?)
For No One
You Won't See Me
And his voice in Let It Be is just PERFECTION!!
And personally, the main reason I listen to The Ballad of John and Yoko is to hear McCartney's vocals at the end!
I also love his harmonies/backing or supporting vocals in Nowhere Man, Don't Let Me Down, Dig a Pony, and I'm Only Sleeping. His vocals make the songs that much better.
There are so many more, but most have been listed. Sorry for the repetitions!