I think the old Olympia Stadion is one of the most beautiful there is. Bright and open it always had good footage from games. Also great things happened there: Holland won the European Cup in 1988.
Although in appearance still as modern as in 1972, of course the open structure, the relative large distance from seats to field, and the lack of a moving roof (which would prevent the pussies from getting wet) makes it a little dated for soccer. But I would love to see a concert there once.
I went to Munich four years ago and I love it, as I love all of Germany.
Pity they meanwhile banned the classic S-Bahn ET420: