Consider a chef's meal for four from Thomas McNaughton of Flour + Water (starting bid: $200), or having Delfina's Craig Stoll working at your kitchen island, cooking dinner for up to 10 people you really, really want to impress (starting bid: $500). We suggest hiding your dogeared Rachael Ray cookbooks at the bottom of the junk drawer for the night.
Come up with the cash, and you could also score dinner from Nopa's Laurence Jossel and Nopalito's Jose Ramos -- either a so-called interactive dinner for four (we're pretty sure interactive means something nicer than helping with clean-up), or a straight-up dinner for eight, both in your home (starting bid: $400). You could even schmooze with Tyler Florence with up to 20 of your friends, hanging out with TyFlo in his Mill Valley Kitchen shop, slurping wine and apps and having the kind of private-store shopping experience Jessica Alba probably gets at, like, Fred Siegel. Except that you'll be walking away with whisks and Japanese knives and stuff.
Check out the S.F. Street Food Festival Web site for the complete roster of goodies and instructions for bidding.