I haven't upgraded to Lion, and likely never will, because they removed the single best feature of OS X, "all-windows" Expose with no stacking into app bundles.
I completely agree. I can't believe that Lion does not have an "all-windows" Expose. It's annoying trying to find a hidden window by minimizing everything.
If someone knows how to toggle between an applications windows, please let me know.
Default Expose was terrible in Snow Leopard too (strict grid layout vs. the old natural spatial layout) but at least then there was a hack to get the old version back: http://superuser.com/questions/118424/old-leopard-expose-on-...