I'm confused.

Last time I checked, "PC" was an abbreviation of "Personal Computer". It doesn't matter which OS is running on the computer - Mac, Windows, Linux, DOS... a PC is still a PC. So this whole advertising campaign Apple started highlighting why a Mac is better than a PC doesn't make any sense. How can you compare a Mac against a Personal Computer?

Now Microsoft has its own "I'm a PC" ads... at least that statement is accurate :-)

At both work and home I use a Mac with Leopard about 50% of the time, and a Windows Vista machine the other 50%.