-
Bowling-
Movie theaters- Various Museums:
Deutsches Museum (that can keep you busy for several days), Pinakotheken (Alte, Neue, Moderne), Jagd- und Fischerei-Museum, BMW Museum (re-opens in the summer, June I think), Nymphenburg Museum für Mensch und Natur (I think is what it's called), etc etc.
- Nymphenburg castle + botanical gardens
State museums (I know the Pinakotheken are) have free admission on Sundays in all of Bavaria. This is a
list of museums in Munich.
Not to forget: shopping!
If you've just moved here, you could also do the tourist program for Munich. See the
Olympiapark, downtown area with various churches and stuff, Nymphenburg, and so on.