I'm only on season four right now of watching the show, but I absolutely adore this cast. They are magnificently talented and incredibly funny. They do some off the wall crazy things and I love that about them. They're all so comfortable with each other and they really have fun with what they do. It's almost impossible for me to choose a favorite character because I love them all so much.
Couple I ship the hardest: Marshall/Lily
Couple I ship the least: not really sure about this one..