The programmer mentioned by FelonyMPulse is Andrew Tridgell, the originator of Samba, which allows *nix systems to participate in Microsoft's SMB/CIFS networking. Samba is GPL'ed, but Andrew mentioned the pizza thing "as a bit of a joke" even in the earliest documentation. Over the years, he has been the recipient of many well-deserved pizzas. This is no small achievement, since he lives in Canberra, Australia.

From the Samba Meta-FAQ:

2.11 Pizza supply details

Those who have registered in the Samba survey as "Pizza Factory" will already know this, but the rest may need some help. Andrew doesn't ask for payment, but he does appreciate it when people give him pizza. This calls for a little organisation when the pizza donor is twenty thousand kilometres away, but it has been done.

  1. Ring up your local branch of an international pizza chain and see if they honour their vouchers internationally. Pizza Hut do, which is how the entire Canberra Linux Users Group got to eat pizza one night, courtesy of someone in the US.
  2. Ring up a local pizza shop in Canberra and quote a credit card number for a certain amount, and tell them that Andrew will be collecting it (don't forget to tell him.) One kind soul from Germany did this.
  3. Purchase a pizza voucher from your local pizza shop that has no international affiliations and send it to Andrew. It is completely useless but he can hang it on the wall next to the one he already has from Germany :-)
  4. Air freight him a pizza with your favourite regional flavours. It will probably get stuck in customs or torn apart by hungry sniffer dogs but it will have been a noble gesture.