One of my favorite things is a page he's put up with invoices for product placement in his third novel Everyone In Silico. He writes would I suppose could be referred to as sf, but like Cory Doctorow and Rudy Rucker, that somehow doesn't seem quite correct. In any case, this novel is set in the future, and out of necessity includes references to corporate products such as Gap jeans and Hershey's chocolate. Being the awesome guy that he is, Munroe then invoiced these companies for product placement (typically to the tune of $30), which I find entirely appropriate, especially since what's-her-face wrote The Bulgari Incident or whatever-t-f that novel was called.
Check it out. Oh, and if you're curious, yes, Flyboy Action Figure Comes With Gasmask is a terrific read.