At the end of the Bob Was Building an Army... video. Showing #1 sulking at a PS4 poster in his room and used a flashback to imply that #1's package that Bob destroyed earlier contained a PS4.
"A Fond Farewell to Kitty0706", where DBS talks about the death of Colin Wyckoff, one of his friends as well as one of the most influential and leading figures of the Garry's Mod community. What really sucks is that the death wasn't due to a car crash or anything - it was cancer (leukemia, to be specific).