TextMate, SSH and github
TextMate is a flexible Mac OS X text editor, it has everything i need, but some days ago I found that it can't prompt me for my password when needed(like when I want to push my changes to github) and that's not cool.
Fortunately, github uses ssh keys and with SSHKeychain installed you can forget about passwords and it helps TextMate to pull and push to github(or any other server) without pubkey authentication errors. Now that's cool.