Quote from Ted in Doppelgangers
Ted: I can't believe we're losing Robin. Lily: [telepathically] Guys, this might be the depression talking, but is Ted's hair starting to look kind of good? Marshall: [telepathically] Thank God. I thought I was the only one. Barney: [telepathically] He looks like a freaking movie star. Ted: And by the way, this was a huge mistake. I'm changing my hair back. Lily: Smart. Very smart. Barney: Told you. Marshall: Not at all awesome.