You can do everything in Emacs, the One True Editor: read email, browse the web, check your calendar, play Conrad's Game of Life, talk to a shrink, oh, yeah, even edit files.
And now you can call up Google, Babelfish, or a couple of other translation services directly from an Emacs buffer. Load up babel.el, highlight a region, do
and your translation appears in another buffer.
Thanks to minor emacs wizardry for pointing this out.
Now if it just had a hook for Latin.