Munich is nice, I was there in July 2007.
If you're into WWII, you have to visit the famous Hofbräuhaus beer hall --it's internationally famous (with branches all over the USA now), and it was one of the beer halls where Hitler gave speeches --in fact it was where, on Feb. 24, 1920, Adolf Hitler reconstituted the German Workers' Party as the National Socialist German Workers' Party (aka the Nazi Party) --so the Hofbräuhaus is the birthplace of the Nazi Party... though that doesn't appear in sales literature for some reason. Its totally tourist friendly, btw --you'd have no idea about that history if you visited. Salzburg is a short day trip away, and so is the beauty of
Konigssee (but it might be too cold for that one).
The new
BMW Welt is freaking ridiculous from an architectural standpoint, I wish I had time to see it. The interior is like a spaceship --and if you buy a car from the factory there it rises from the floor for you in a ceremony
http://www.bmw-welt.com/web/portal/en/index_highend.html
There's plenty more --I'd borrow a Lonely Planet from the library and find all the other stuff --there are some beautiful cathedrals and churches.