No one has drawn up a list of nearby restaurants yet.
Well, here's a start
A link to the [http://maps.google.com/maps?q=14901+Dallas+Parkway+addison,+tx&spn=0.021963,0.040525&hl=en GMaps page] for the conference center, to serve as a convenient starting point for GMaps directions to places below.
[http://www.addisontexas.net/where_to_eat/restaurants/BJs.asp BJ's Restaurant & Brewhouse] ([http://maps.google.com/maps?spn=0.005491,0.010131&saddr=14901+Dallas+Pky,+Dallas,+TX+75254&daddr=4901+Belt+Line+Rd,+Dallas,+TX+75254%C2%A0(B+J's+Restaurant+%26+Brewhouse)&hl=en Directions], Distance 1 mile) has Pizza and Americana, decent beer (free samples), and a killer baked deep-dish cookie called a "pizzookie" or somesuch for desert.
The town of Addison maintains [http://www.addisontexas.net/where_to_eat/ a list of local restaurants].