AVR-Chat

So...has anyone here overclocked AVR chips?  How successfully?  Hpow far?

   I note that some fothe Atmel data sheet charts show performance at up 
to 24 Mhz, which is 25% above the rated 20 Mhz maximum clock.

   I also note that Atmel is very specific about not pushing the clcok 
speedfor the EEPROM over certain fairly conservative limits.  I am 
guessing,   based on their literature, that the EEPROM circuits are the 
most sensitive to excessive clock speeds (whihc kind of makes sense, 
thinking about how EEPROMS are written).

  In any case, any experience?

tom