I’m installing the Colorbox Module in Sand today and will then install in Prod. I don’t have a compelling reason to install it now; my site doesn’t focus on images. But I believe that there will be media that I’ll want to show. It’s a web site after all. And at some point I’ll need to be able to do this.
There are MANY gallery options in Drupal. My needs are pretty simple so I don’t feel the need to get anything too fancy.
This mod has been around for a long time and has 100ks of installs. So it is nice and stable and well maintained. It requires a jscript library that you can download.
http://www.jacklmoore.com/colorbox – reference for colorbox.