dudealan2001: The material for the sculpts is based off the Green Glass matcap from the Pixologic website, I just played with the properties and changed the hue a little bit. If your interested, I threw it up here.
I haven't used Mudbox or 3d Coat much but one thing that makes ZBrush much more preferable than Mudbox for me is how Pixologic treats their customers. All updates are free etc.
I think if you mirror the eye it's going to be pretty much finished. For that you can duplicate the subtool and move it manually or use subtool master (plugin available on pixologic's website) and use the mirroring feature.
Go to Pixologic Download Center, download the Zmapper plugin: http://www.pixologic.com/zbrush/download-center/download-center.html Visit this link and download the PDF file: http://206.145.80.239/zbc/showthread.php?t=031281
Actually there comes a fine hotkey list (PDF file) with zbrush, but it is hidden in the zbrush application folder: Pixologic\ZBrush2\ZData\ZPlugs\ZHelpTopics\Images\ZBrushHotkeys.pdf Here is a screenshot of it: http://www.huschang.de/pimp/zbrush_hotkeys.gif
I often peek at the zbrush classroom: http://www.pixologic.com/zclassroom/homeroom/ Which includes the videos Brad posted. The Pixologic site is full of these usefull goodies. They seem very eager to teach people Zbrush.
So that's a bug or what? Cavity automasking over the brush is a often used feature! It can't be that pixologic didn't fixed the bug before releasing?! Or is it just me who oversees a button that needs to be activated in zbrush4...?
I wanna see what QMesher is about in operation. Bugs me a bit when pixologic sells a new feature by word then speaks nothing of it for a while to come :/ But vector displacements :) I can't wait!
It's included with the latest versions of zbrush. You should see a small GoZ button (ctrl+G) near where you load and import Tools, as well as documentation for it in Pixologic\ZBrush 4R2\Documentation\plugins