I run two websites that accept BTC for payment for actual products.  We get, on average, about 1 purchase a day (only in our second month) via BTC.

I've used my BTC to purchase a cocktail at a bar (know the owner, showed him how it works), and also used it to get an electrical circuit run at my production warehouse (posted on Craigslist want ad, found 2 electricians interested in bartering for BTC).

Haven't used it for a purchase online though.  Yet.