[fitztrev]

I was actually going to do this at first. Something as simple as openURL:"ssh://[e-mail]", then let OS X handle opening the default terminal. But I wasn't able to easily specify things like a different private key (for AWS or Vagrant). This at least gives the user the ability to specify any option that they could also specify on the command line.

[jlgaddis]

You can specify per-host keys in ~/.ssh/config (hint: "IdentityFile").

[HendrikR]

Right. Nevertheless, this tiny little menulet might be a nice starting point for all those people who are not too experienced with secure shell sessions.