Gourmet Live gives you more than you can imagine on the subject of tipping. It begins with the Mr. Pink diatribe on tipping from Reservoir Dogs and then does a excellent job of arguing Mr. Pink's side.
Finally, a customer (who also happened to be president of the Wild Salmon Center in Portland) was banned from a restaurant for suggesting, or possibly confronting that they not serve blue fin tuna.
I'll write about these things, but I know most of you don't come here for what I have to say on that. So, don't you worry, I have a couple of other great sous-vide/modernist posts coming up too. And tomorrow, I go see Rene Redzepi, David Chang and Ruth Reichl talk at the NYPL.