The full title is "Licht an aus - Die Late-Night-Show" and it ran from 2009 to 2013.
It was hosted by Oliver Pocher and featured a variety of guests, including:
* Comedians
* Musicians
* Actors
* Athletes
* Politicians
It's impossible to list all the guests that appeared on the show during its run. You can find more information on the show and its guest lists on websites like IMDb.
Let me know if you have more questions about "Licht an aus" or another show.