In 2010 Laszlo traded 10,000 bitcoins for pizza
Today,
Laszlo: “This is an open offer by the way.. I will trade 10,000 BTC for 2 of these pizzas any time as long as I have the funds (I usually have plenty). If anyone is interested please let me know. The exchange is favorable for anyone who does it because the 2 pizzas are only about 25 dollars total, maybe 30 if you give the guy a nice tip. If you get me the upgraded extra large ones or something, I can throw in some more bitcoins, just let me know and we’ll work something out.”
Source: https://bitcointalk.org/index.php?topic=137.msg1195#msg1195