I just finished reading "I am Ozzy" and he quotes "Of all the people I got to meet, though, the most special was Paul McCartney" They email each other from time to time & meet up at various events. Apparently there were rumours going around in the Press for a while that the two of them were going to do a duet. Ozzy says that he didn't hear anything from Paul but went on to say "I'm glad I didn't, 'cos I would of shit my pants, big time.
Anyway; it would be great if Paul did some duets in the future even w/ Ozzy.
Cheers Macca Fans!