I'm not too often in Munich but here's what I've gathered:
The Pinakothek der Moderne (http://www.pinakothek.de/pinakothek-...h/englisch.htm
) is a nice museum for modern art much like the Guggenheim in NYC.
There is an entire quarter full with museums (http://www.pinakothek.de/
just click on the buildings).
If you care about technology there's always the world's biggest technology and science museum: the Deutsche Museum (it has two outposts; one for planes and one for cars).
The FÃ¼nf HÃ¶fe are an absolut must-see as it is the coolest shopping area I've ever seen (and I've been around a bit; http://www.toytowngermany.com/munich..._precinct.html
) and very trendy and modern.
If you want to have some Weisswurst I'd recommend the Franziskaner (and remember, it's a breakfast sausage, so you should order it before noon).
Other than that you should take a little stroll from the city over the ResidenzstraÃŸe (where a lot of posh places are as well; can get there directly from the Franziskaner if I'm not mistaken) to the Feldherrenhalle (this is where Hitler made a lot of his speeches...; right at the end of the ResidenzstraÃŸe) to the Staatskanzlei and then to the English Garden. Have a pretzel or a Hackse, or what ever you want at a beer garden. Enjoy the Japanese Quarters of the park.
Have a good trip and be sure to use the S-Bahn whenever you need to travel a distance- the best public transportation network I know of.