We have regular seminar series in general system and networking areas on Fridays, given by internal and external speakers. If you are visiting DC area (e.g., for NSF panels) and have time to stop by and give a talk, please let me know. We would be very happy to host your visit.
SongqingP.S., Since now talks are always announced on the dept web page, I no longer actively update the SANG web page, but just maintain the email list.