Posting a mini trip report in 'Travelogues', tomorrow hope to post a photo for you of the departure board.Zurich HB is insane because of how immense it is plus how efficient it is. You can also get very lost if you're not careful, especially if you're switching between the main tracks and 31-34 or 41-44.
If you don't have a lot of time, head to the main hall (Tracks 3-18). Admire the the big departure board and all of the different types of trains we don't see in the US. Plus the people-watching on the hour and half-hour can be quite a show.