Yeah, I love that song (You Are My Heaven).
Stevie did two Donny covers on his recent tour, both of which I have. He did "The Ghetto" and "I Love You More Than You'll Ever Know".
I also have a version Alicia Keys did of "Someday We'll All Be Free". It's nowhere close to the original though, although that's more of a testament to Donny than it is a knock on Alicia.
Man, I really miss him, I just wish he could have had a larger body of work. He may very well have turned out to be my favorite artist ever had he been around longer, he was every bit a genius as I think Stevie, MJ and others were.