I’d like to share and recommend an app I very rarely have need to use; in fact I really only use it when I’m re-jailbreaking my Apple TV, which hopefully I’ll not need to do again for a good long while. However, I wish I had chance to use it much more often. It’s called Cathode (Mac App Store link, $10) and it’s a fun alternative to the Terminal utility that comes with OS X.
For those who don’t know Terminal (and nobody would blame you if you don’t) it’s used for accessing the command line of the computer. The command line is kind of one level of sophistication up from the system’s guts. When you do something in the graphical user interface of your app, the resulting commands come here to do their thing; you can make the computer do anything you want from here, including committing computer suicide, making it an intimidating place for the inexperienced.
(I know pretty much zero about working with the command line except what I copy and paste from reputable sites when I’m jailbreaking. I have gathered that ‘sudo’ is a powerful and oft-used command that makes something ‘do’ something, so I allowed myself the luxury of smiling knowingly at the recent Penny Arcade guest strip about that one, although I probably shouldn’t have.)
So whether you’re an occasional user or you pretty much live in the command line, you may appreciate Cathode for putting a friendlier face on it than the cold, blank stare of Apple’s Terminal.

You can tweak almost every option on the screen including font family, size and colour ; background and foreground colour; monitor curvature and reflection opacity; rate and opacity of the scan-line; character flicker; a whole bunch of retro sounds you can turn off completely if you like, including a beep every key press just like the movies; you can even put an iSight photo of yourself at the keyboard into the screen reflection.
It’s all completely cosmetic but it certainly makes digging into the command line on a Mac a much more enjoyable experience. At the moment I have a setup inspired by the Swan computer in Lost:

Thanks for reading. If you’d like to comment on anything I’m @myglasseye on Twitter.