Although I am fairly certain that at some point, Upstream offered 1/2 priced bottles of wine throughout the week until 7 p.m., that deal is only offered now on Sundays.  The happy hour bar bites, however, are still offered.  $6 will get you some excellent mussels (somewhat spicy broth), tempura fried green beans (YUM!), and a myriad of other options.  Also half priced sushi rolls, I do believe.  It is confirmed that Upstream DOES have a pastry chef, contrary to some popular belief around here.  We did split a chocolate mousse cake which was a hit, and there were some seasonal additions that sounded intriguing.  Gingerbread cheesecake or something along those lines.  Let me know how it is if you get to it first!