This episode was fantastic. Not only because Barney and Robin admitted how they felt, but Ted and Marshall was hilarious. It's been a while since they did something like this together.
This whole season is great. Every episode has been old, classic How I Met Your Mother. And of course, the relationship between Barney and Robin. I personally think it's great, not only because I love the couple, but I think that the show makes amazing relationships in the gang. It's great to watch.