Is that really the BT guy? He seems a lot older.
Anyway, I was going to say the same thing. Though last weeks was a lot of the same stuff over and over (woman crying), it served a purpose. This week it was needlessly repetitive and just too much of a stretch of reality to believe in. I know we can draw our own conclusions about how this concept was used to take over the world, but actually showing that process would've been a lot more interesting than what we got.
To an extent in the first episode and certainly with the second two the problem seems to have been that there was a fantastic basic concept, but it wasn't adequate (or the writing wasn't adequate) to fill up a whole hour. They do feel like worlds that deserve a substantial period of immersion, but that time should be filled with more detail, rather than going over the same plot points numerous times.