When drawing pixel art in Photoshop, I like to have the zoom level really high. Is there a way to also have a regular-level zoom (or perhaps an outer zoom) in another part of the window, so that I can see how the regular zoom will look as I work?
Look under the
Window > Arrange menu for "New Window for [document name]" (it will be at the bottom). That opens the same document in a second window. Then you can tile the two and zoom in on one of them.
This is a very common technique when working in Photoshop for retouching as well as drawing.