Any Mad Men fan knows that the complicated and often fierce character of Trudy is played by Alison Brie.
Trudy was first introduced in Season 1, Episode 4, "New Amsterdam," when she surprised Pete and swung by the office.
But what you may have missed was Trudy's brief cameo in the pilot episode.
She first appears when Pete is talking about his impending nuptials, and he holds a photo of Trudy to gush over her.
But wait... that's not Alison Brie!
It's actually a photo of Judith Weiner, the mother of Series Creator / Executive Producer Matthew Weiner.
Judith is still alive and still married to Matthew's dad, Dr. Leslie Weiner.
Pretty cute, huh?!