A project I led shipped a system based on multiple RPi's used basically as web kiosks to drive large TV's monitors. We also built another Pi-based system used f

A project I led shipped a system based on multiple RPi's used basically as web kiosks to drive large TV's monitors. We also built another Pi-based system used for monitoring equipment remotely, but I wasn't part of that effort. I've come across a commercial HVAC system (like the big units on top of office buildings) based on the RPi Compute Module. Actually seen that from two different companies. There was a subreddit that's now subsumed into /r/Raspberry_pi that was all about sightings of Pi's used in commercial products like airport displays, billboards, kiosks, etc.