Ctrl + L , Ctrl + enter.
Ctrl-L selects the url of the current page and Ctrl-enter opens a new window at the selected url.
*One problem if you hate toolbars, Ctrl-L brings the location toolbar back. I guess you could do alt + v, w, n
to remove it,
making this the ever-so-handy Ctrl +L, Ctrl + enter, alt +v,w, n.