Boring, I know, but I just have mine set to
www.apple.com
I sometimes think about changing it (some sort of news or updated-throughout-the-day site so I'm always greeted with the latest bit of "what's going on in the world"), but it's just comfortable and out of habit. Been doing this since my tangerine iMac DV back in February 2000. Feels nice to touch base with the mothership at the start of my online sessions...
"Ah, yes...Apple. I see the iPad is still on the homepage. The world hasn't ended yet...".
But maybe I should put it on MacRumors or even Macworld, just so there's some new, constantly-changing info throughout the day?