how do I access iTunes Visualizer options? I'm using iTunes 10.4 and under "menu > View > Visualizer >" there are two options, "iTunes Visualizer" or "iTunes Classic Visualizer" there's also a greyed out "Options..." menu.

The last time I used visualizer (a while ago) there were several cool visualizers to choose from like plasma shapes, and bouncing balls, and stuff.  I don't see any of that here.

Where are these options?  Were they removed?  And why is "Options..." greyed out?

Thanks!
Have you upgraded to Lion?

As per this support thread it seems the extra visualizers require 32-bit mode:


  Right click on iTunes.app in your Applications folder and click "Get Info". In the window that appears, click "Open in 32-bit mode" at the bottom of the "General" pane.
  
  This is a work-around, not a fix, and I have filed a bug report with Apple.