One will change the course of your life forever.
The other, a telephone. (And then some.)
This could quite possibly turn out to be the most exciting two days of 2010—Unless your name is Gerry Connolly, that is.
I'm not seeing any information about a WWDC live feed on Apple's site, but will post it if I run across it. But if you happen to live in Fairfax County, Virginia, you can find out how to stop Gerry's run in Congress over yonder.