If you are interested to learn how was all the story read this article. It is very interesting the story because the bitcoins was send not to the pizza maker but to another person which pay then 25 us dollar to buy the pizza for the sender of bitcoin. And for the most this transaction is marked as the firs transaction of bitcoin on its story. Learn more (if you want) here: http://motherboard.vice.com/blog/this-pizza-is-worth-750000
From the article: "It is widely believed that the first real-world bitcoin transaction took place on May 21st, 2010. Laszlo Hanyecz, a programmer living in Florida, sent 10,000 bitcoin (BTC), the online-only, open source cryptocurrency, to a volunteer in England, who then spent about $25 to order Hanyecz some Papa John's."