Thought I'd bump this thread since there was a new episode last night.
I hate these episodes when Ted and Barney have some crazy scheme to do something like open a bar or adopt a baby. Kal Penn contributed absolutely nothing to this episode, the Puzzles song was lame, and the whole wet hat bit was just stupid.
The Marshall and Lily stories with their fathers had potential, but since they had to cram in the Ted/Barney, and Robin stories they couldn't do those stories justice. I wish the producers would get a clue that they don't need to give everyone equal time in every episode.
IMO this was the worst episode of the season.