Peer observation of teaching is an excellent way to receive concrete, fact-based feedback on what it's like in your classroom.  This spring quarter the math department will run peer observation among 1st and 2nd year grad students, and this meeting will introduce that.  It is also open to more advanced grad students.  In particular, any student eventually needing a teaching-focused letter of recommendation (which is required for almost all postdocs) is strongly encouraged to attend this session.  Our set-up will be based on Danny Mann's talk in fall quarter.