Many overclockers will talk about "burning-in" a processor - i.e. your Duron 600@950 may not be very stable initially, but leave it running under high load for a few days and magically it starts getting more stable. Here's Homer to present to you the delicious Afrotech method to burn in your CPU! (P166 used for this example)
 

"After the breakup of Compu-Global-Hyper-Mega-Net I was left with a bunch of lousy computer parts. However I DID manage to find a yummy potato chip with "Intel" written on it for some reason. Barbequeue time! Woohoo!

Here was my magically delicious recipe for Pentium Flambé:

1 chip
1/2 lemon
A few olives
A dash of Chateau de Acétone 1999
Some funny looking green computery things for extra herbal flavour (optional)
 

Marinate together in bathroom sink for 30 minutes, then ignite! Back to you, stupid hair guy!"

That's Afroman...

Whatever!
 

Anyways here's the real life pic of the project:

After burning in the p166 like this I was able to overclock it to 1866Mhz! Or at least, it was as hot as if it were running at 1866Mhz anyway...