Easily create an ISO image of a CD/DVD

I occasionally find myself needing to create an ISO from a CD/DVD at work. Whether it's of some volume media, a diagnostics CD, or other CD that is created by a vendor. Today I found myself searching for a simple, free tool that does this. In particular, I recently burned a Lenovo diagnostics CD - it would not let me just create an ISO. I want an ISO so it can be a part of my multiboot USB drive with every ISO I frequently use.

Thanks to a question on superuser I located and the corresponding answers, I found LC ISO Creator, a 14KB (KB!!!) freeware tool from Lucersoft. It's as simple as it gets, and it works great.