Hey all, here's atest I've been doing over the last few days
in edit mode, select "Cull Backface" from the mesh edit options (where Draw Normals, Draw Faces, Draw Edges, etc are) and then watch in amazement as the faces pointing away from you are hidden... even in wireframe mode (gasp)
1) Only works with basic meshes (no subsurfs, no curves, nurbs, etc)
2) When you un-toggle the Cull Backface button, it wont un-hide the verts that were hidden, you need to unhide (alt-h or something) to view them again
3) When you first press the "Cull Backface" button, nothing will appear to happen at first, move the viewport around a bit to see the change
4) I'm probably missing something
Anyways, give it a go, please give me your comments/critisizm. I see this tool mainly used to edit faces mabey, when you're too lazy to hide the back of the head yourself.
Ohh, and vertices that are selected will not be culled. This isnt a bug, I just thought it might improve workflow.
p.s. thanks to zr for giving me some pointers on the viewport.