Okay, so I was playing Half-Life 2: Episode Two in commentary mode, and I also happened to have the captions on. But when listening to one commentary node after I got off the elevator in the room with the thumper in the cave (if you played it you'd know what I'm talking about) it said, at the end, "[NOTE: good spot to take over the player's camera to swoop down and spawn some antlions and trigger the vort's attack]". Later on, I came across another one (in the area where you fight the two antlion guards shortly after you exit the cave) which said "[It'd be good to show wireframes of the model, and maybe 'Before and after' images.]" By the way, the model they were talking about was that of Alyx. Let me just point out that they didn't actually use either one of those ideas listed there, although I wish they had! These are obviously notes the developers left for themselves or other developers to see later on, but they seem to have forgotten to remove them! By the way, this is on the Xbox 360 version in The Orange Box; although I doubt it's specific to that version, I just want to let you know just in case.
Pretty funny, isn't it?
Pretty funny, isn't it?