Knowing your BIOS information, e.g. Revision or Release Date, can be critical in troubleshooting your hardware (and even software in some cases) issues.
This begs the question, where do you find this information? Well, you could obviously just reboot your PC/Server, go into your BIOS and get the information there. Of course, not all of us have the luxury of being able to boot our PC and going into the BIOS at free will. Especially in either ‘headless’ or off-site boxes.