Dates for Anti-Flag's east coast 20th anniversary shows can be found in the replies. Support on the various dates includes The Swellers, Make Do and Mend, Hostage Calm, Lemuria, Code Orange Kids, This Is Hell and more.
If you missed it, you can watch Justin Timberlake's full episode of SNL here. If you would rather just watch his performance of "Suit & Tie" and "Mirrors," you can do so by going here and here respectively. Be sure to keep your ears open for his slight shot at Kanye West in response to his remarks a few weeks back.