There are a number of forums for you to raise issues, ask questions, present work and new ideas, and meet other members of the Institute:
Star Formation Journal Club Please check the calendar for times and locations.
Postdoc Tea: Friday afternoons at 3:30, in the ST Lobby (outside the auditorium). A place to grumble about politics, rejoice about data reduction, or argue with Mario.
Science Coffee: Daily at 10.30am in the Cafeteria. It is scientific on Fridays, less so the rest of the time. On Tuesdays it's across the street in the Bloomberg building. Check the calendar for location.
Postdoc Meetings: Occasional: Held as announced to the Post-Docs mailing list.
Science Staff Meetings: Monthly meetings attended by your representatives.
Science Computing Working Group: Monthly meetings attended by your representative, M. Trenti.