Today, Overstock.com brought their Bitcoin processing system online. I figured since they're team players, I'd order a few hundred dollars of things I'd usually order from Amazon. Their payment processing system was flawless. I got a bitcoin address to send payment to, total to send. Sent the payment, waited maybe 5 seconds, then clicked "confirm payment". Received an email from them confirming my order within 5 seconds or so. +1 to Overstock.
On a side note, this may have saved me a ton of hassle in the long run as I just received a phone call from Overstock asking if I had placed two orders shipped to two different addresses. As it turns out my credit card number was stolen and someone ordered a pile of stuff with it from Overstock and from the list of charges today, a half a dozen other retailers. I love how the financial industry badmouths the security of Bitcoin when they rely on shared secret security mechanisms (credit cards). +2 to Overstock.