re-loading .emacs file

[Lowell]

I would sometimes like to change my .emacs file and then re-load the new 
version. Usually if my change is adding stuff to the file, I can just 
just re-load the file without interrupting emacs. However, if I want to 
_remove_ a binding form the file, what I've been doing is totally 
restarting emacs. This seems like overkill. Is there a better way to 
reinitialize emacs with the new version of my .emacs?

Lowell