This episode had potential, but it almost came across as a drama rather than a comedy. I loved the English nanny they almost hire (though not in that endscene) and would have liked to see her a few more times, but like most things, Barney had to go and ruin it.
The humor felt a bit off, especially right off the bat with Ted's boasting about Victoria keeping tampons at his apartment. It just didn't feel very HIMYM. Also, there were two scenes where the camera had to pan to follow the actors in scenes where panning shouldn't have happened. Sloppy.