how do i re-add a file?

I did git-rm on a file and committed. Made some changes to my sources
and committed. Now I want the file back. How can I do that? Related to
that, how do I revert my files to some past commit state so that the
commits in between are kept in the history?

Thank you,
Ittay

-- 
Ittay Dror [off-list ref]
Tikal <http://www.tikalk.com>
Tikal Project <http://tikal.sourceforge.net>