As anyone who has seen me launch into one of my retarded, yet enhusiastic guitar solos can attest, I am all about the pick squeal... that screechy noise that's kida like a harmonic, but you can get it behind any note just about anywhere on the fretboard.

That said... what are your favorite pick squeal moments?

"You're My Best Friend" by Queen - that first note of Brian May's guitar solo.
"Jamie's Cryin'" by Van Halen - Eddie throws it in on a couple of those signature "wah-wah"s

Others?

How does one do a pick squeal exactly, and what makes it different than a harmonic (besides the anywhere on the fretboard bit)?

You hold the pick with your thumb right near the pick end. When picking the note, the string gets monentarily pinched between the pick and thumb and creates the "squeal" noise that you hear simultaneously with the picked note.

It is a type of harmonic, but the method of production is unique, as is the sound quality.

'no more tears' era zakk wylde....

im not sure anyone pulls off pick harmonics better than him

btw, i do believe they are called 'pick harmonics'

Semantics, Scotty.
Semantics.

I always loved the pick squeal in

Prong - For Dear Life

Tommy Victor was the master of pick squeals. They were all over the "beg to differ" album.

Wow. Been awhile since I thought about Prong. That album was a classic. Let's hear some love for Prong.

It seems like Zakk Wylde uses artificial harmonics every other note. He really likes them!

yup....i love listening to him play

"Crazy Babies"

I was gonna say "Prison Sex" by Tool, but your apparently speaking more of harmonics than the pick drag.

Dunno if this is quite what you're talking about, but my favorite Sugar song ("Needle Hits 'E'") is my favorite mostly because of a single guitar tone between the first and second lines of the last verse;

"Been living it large
(ping!)
Fill it up and gimme the wheel"

My favorite Sugar song too.
Unreal that it was relegated to a "B" side!

But I can't remember that part, whether or not that's a pick squeal.

this is pretty much what every paper airplane pilots practice eventually turns into

I once pseudo-semi-synthesized a pick squeal by doing the following on an ARP 2600:

run the keyboard voltage through the sample-and-hold generator;
control the voltage of one oscillator with the keyboard;
control the voltage of another oscillator with the output of the sample and hold generator;

method of play is to play two "interesting" different notes, one after the other. Judicious use of the pitch bend yields interesting results as well. The delay caused by the sample-and-hold frequency causes the two oscillators to be playing different notes for a while. The rate of sample-and-hold and the rate of play also had some sort of relationship, but I'm not sure what that is.

It also worked really well when I ran it through a ...oh, I forget what they're called, those distortions that don't do hardly nothing when you're only playing one not, but fuzz out when you're playing two.

That said, I can't think of what my favourite one is, that I've heard on a professional recording. Are those solos by Iommi on Sabbath's Technical Ecstasy pick squeals? At the beginning?

I got your sample-and-hold generator. Right here.