90% of the time I use a two window set-up, I know several 'power users' do the same thing. It's much faster for large scenes because Animator only has 2 windows to draw instead of the usual four (note: lights slow OpenGL down more then polygons!)...
Click here to see my setup (http://homepage.mac.com/cake_or_death/layout.jpg)
You can use the menu (shown open) at the top of the Top View to change cameras... how slow, don't you wish there was a faster way?
Fret not, there is! With that window in the foreground, hold down the option (alt) key and any number from 1 to 6, this will cycle through the views available to you.
If I'm not animating in a scene I would scale the project window down to just the object list. I actually run EI with dual monitors so sometimes I move the project window over to the second monitor and make it tall and then scatter other windows around it in a nice and untidy pile :)
Hope that wasn't too patronising!
PS. Remember: Alt and 1 to 6!