I am at 65% and its been about 6 hours.

0%. Physical copies are the way to go.

Am I the only one who still can't buy the game from Battle.net? I've gotten an error message all day.

Took them awhile to accept my debit card. Battle.net servers have since gone down once. I was in the middle of the game and got that pop-up message saying my connection to the server had been lost (which disables achievements and such). I clicked through too fast to read the implications of not being connected since I wanted to get back to playing ASAP. 
 
Anyway... I guess I was smart to download the client way ahead of time. I'm not surprised their servers are being hammered. I have to say they've held up decently for such a huge launch. Even that time being down was minuscule.

At 22% and have no previous Starcraft experience.  This will be interesting but the live stream sold me on the game for some reason.

99% for my guest pass.  Been going since this time last night, but it's a lot faster since about 3 this afternoon when I shut off peer to peer downloading.

finished.

It took me about 2 hours to download the game and I have a 12 MB Internet connection.