Mark, if nothing else, overclocking is fun. I have my EVGA 680i motherboard and 2.4 GHZ Q6600 processor overclocked to 3.2 GHz, but I did have it up to 3.6 GHz, (dropped it because I didn't feel comfortable with the CPU voltage required).
There is quite a lot to know about overclocking, and it's a very methodical process. Thankfully my motherboard/processor combination is quite popular so there were many guides online from well respected overclockers.
I won't choose any other motherboard other than an EVGA, as their forum is extremely helpful and their members will walk you through the entire process.
