Badass! I have a recent desire to learn Randy's solos because ..
I was watching one of those YouTube videos the other day, where a vocal expert critiques the performance of a singer. The song this lady was doing was Crazy Train. She had the usual stuff to say about Ozzy, but the real treat of the video was her facial reactions to Randy's fill-ins and solo. She was dumbfounded by his brilliance. It was most delightful to witness.
The whole video is worth watching, imo, but the funny faces start at 10:00. They're better if you watch the whole thing though. Check it:
The way she reacts and then replays and reacts 4-5 times on the solo is awesome. And then the way the runs at the end blow her mind. Randy is effin legendary.