Not to offend any fans, but it seems like when there wasn't much going on during an ep, Barney seemed to pull the show through.

SUIT UP
HAVE... YOU MET TED?
THE BRO CODE
HIGH FIVE... I'm going to keep my hand up here until someone high-fives it
CHALLENGE ACCEPTED
I WAS DEPRESSED ONCE AND THEN I DECIDED TO BE AWESOME... TRUE STORY
I'M TED'S BEST FRIEND

By the way, what did Barney do for a living?