Oops! I just realized that I zombified this thread from a couple of years ago. I forgot for a few minutes that I was looking at the results of a search I did, and not the “New Posts” list.
Sorry 'bout dat.
Pearl Jam singing and Vedder opening up his jacket to reveal a K on it, soon after Cobain had killed himself.
Blue Lou breaking out of the sarcophagus and doing an amazing sax solo during Steve Martin’s King Tut.
Paul Simon’s singing of The Boxer on the first show after 9/11, which was hosted by Mayor Rudy Giuillani:
So it’s okay for us to be funny?
Hizzhonor: Why start now? LIVE FROM NEW YORK, IT’S SATURDAY NIGHT.
Most poignant opening ever.
Lily Tomlin’s duet of “I’ve Got You Babe” with Scred. By far the most charming moment of the entire show.
More cowbell.
Aerosmith on Wayne’s World. Dude, I laughed so hard I almost hurled. Okay, not really.
Just the other night I saw a rerun of the show Simon Cowell was on. He joined Horatio and Jimmy on that dopey Christmas song they do, only this time I think it was about Easter.
On the OP’s topic:
Garrett Morris singing “Dalla Sua Pace”
off topic:
The entire broadway cast of “Pirates of Penzance.”
I loved both of them.
Four years later… and I still am not too sure what the OP wanted. 
I guess Ashley Simpson doesn’t count, eh? 
Damn, just beat me. I thought it was cool that Wayne & Garth got to play with them. Garth was even on drums (I think Joey Kramer was relegated to the cowbell).
Well, considering Garth’s played drums with U2, that’s not surprising.
Don’t downplay the importance of the cowbell. I’ve got a feveh…
never mind
This thread is 4 years old?
Date of OP: 07-27-2002, 01:19 PM
Well, 3.5 years old. 
The band playing Air Supply’s “All Out of Love”…oh wait, that was Conan O’Brien.
I mentioned this in my recent SNL thread, but Natalie Portman doing gangsta rap was brilliant and filthy. Best thing on the show in years.
Eddie VH didn’t play “Eruption”. It was “Stompin’ 8H”. I presume 8H is the studio SNL uses. It basically comes off as “here’s a chord pattern for you guys to start with. Ok, now, how about this, how about that, and leave a couple wide spots for me to go nuts.”
I was reminded by another thread of Lily Tomlin’s duet of “I Got You, Babe” with a Muppet in one of the very earliest seasons. It was made even more adorable by the Muppet being sort of a mangy, lizardy thing.
Or maybe by an earlier post. 