
Detail I noticed first time...
So in this episode lenny and penny are going to the movies as friends and he was worried about being overdressed. But then we see penny wearing a blazer (which I don't think we've ever seen her wear up until this episode).
I think this was such a clever way to show that maybe penny was also overthinking. We don't really get to see penny yearning or wanting him except for her being jealous of priya as we mostly see the series from the guys perspective. It's fun to find these details even after rewatching the show multiple times.
Sorry if this has been pointed out already...