The fabulously talented folks behind ExpressionEngine went through an entire re-branding, leaving pmachine in the dust and launching an all new and quite spiffy looking Ellislab!
Why the name change? pMachine was an outgrowth of our first, and at that time (six years ago), only product. Both our company and software were pMachine. A couple years later we released ExpressionEngine, which addressed some serious limitations of pMachine. EE essentially made pM (the software) obsolete. Our users agreed, switching to EE in droves and eventually compelling us to discontinue pM due to low sales. Still, our company continued on as pMachine. [Source]
Congratulations to all the fine people at Ellislab. I simply can not wait to see the other great things they will be working on in the future!