I think this is a was a good start the new season. It had humor, heart, and a couple twists.
I'm so happy that Marshmallow and Lilly-pad are finally having a baby. I've been hoping for it since season 1 and its finally arrived! I was a little confused by Ted, I've seen every episode and I have yet to see Ted not be obsessed with finding a girl to spend his life with, and my favorite part of the episode was Robin and Barney's dance number. It was epic.
Overall I felt this was a very good acted episode, and and an ok written episode, my only problem with it is that they left us with a cliffhanger from an episode that hasn't even happened yet.
Other then that, A good premiere.