Call me crazy, but viewing images from a CLI app can be pretty cool.
Yes, we have the ancient art of ASCII (and that will not go away)
but why not use a real image in some cases?

Now the nice folks behind iTerm 2 have made that possible in versions
of iTerm post-2.9. I do not claim this has not been done before, but
I am unaware of this capability in Terminal. Anyway, on to the goods:

Steps for ZSH Users

[ iTerm & ZSH, great together ]

• mkdir ~/Projects/iterm/imgcat && cd !$
• wget https://raw.githubusercontent.com/gnachman/iTerm2/master/tests/imgcat
• wget http://p1cdn01.thewrap.com/images/2014/05/Halt-and-Catch-Fire-8.jpg -O hacf.jpg
• Change $PATH to include ~/Projects/iterm/imgcat
• Reload your shell
• imgcat hacf.jpg