I know i can do it in linux, anything similar in osx?
Firstly make sure X11 is installed (it's an optional install on the OS X dvd)
You need to ssh in with X11 forwarding.
Open terminal and type
ssh -X username@host where username and host are the relevant details.
This will log you in. Once logged in type
gedit and the X11 server on your mac will start and show the gEdit window.