Me too! I think it’s gaining a little extra appreciation lately. For us the wow-factor was the ease of tying it together with a C host program in lieu of some conf file based alternative. For example our Keybow (Raspberry Pi-powered mechanical macro keyboard) product uses Lua to let users easily define and share macros. Not only does this trivially exceed any effort I could have made to design a domain-specific configuration file format, but it’s allowed users to try things I’d never conceived.