I've been wanting to jump into the Mac scene for awhile now, and these new iMacs are exactly the excuse I've been needing to force myself to do it. An iMac with a dual-core Intel chip? Man, two years ago that would have been unthinkable.
I don't know why it's bothering me so much, but on all of Google's websites (main page, GMail, Blogger, etc.) the font is just slightly larger than it has been previously ... I didn't change any of my personal settings (as far as I know)