I am so glad that How I Met Your Mother finally seemed to get back to the storytellig that it does well. I still wish that there had been a CLUE as to the mother, again, but I will get off that dead horse and stop beating it.
Barney's hatred of the ducky tie is laughable in the first place, he loves to look so good all the time, and to play on that is brilliant. I love it. The slap agreement made me so happy that there will be at least 2 more Slapsgivings, or a couple more slaps... that is so wonderful. I remember the 5 slap bet, and the first Slapsgiving, and the second, and the Barney one man show where he got slapped, it was all so hilarious, just like the 2 Marshall tagged him with leaving Barney terrified of more, just like before. I love it.
I actually really like the addition of Kevin to the cast, recurring basis or no, even though it started a little icky. I like that he figured out the motivation between the compromise for the ducky tie, and that he led the group in the storytelling of Hurricane Irene (which Hurricane Errikson, not a good name for a baby, but if she is a girl, how about Irene?)
However, I think that if he is so insightful, it might be hard for him to not see that Robin is still so crazy about Barney. Maybe they do a good job of hiding it, but I think it would be pretty obvious to someone so insightful.
BUT, the KISS!!! I think Barney just assumed that Robin wasn't into him any more, or just hasn't come to terms with everything, but it would be so excellent if she is really the one. I love that they smooched (although it stinks that they each have other people in their lives) and I can't wait to see the repercussions of the kiss. Which of them ends it with their significant other? Which one has a hard time keeping the secret? Which one plays it off like it wasn't a big deal, and which one finally tells the other how they really feel?