There are definitely more, but this is what I've got off that top of my head (to be completed as they come to me)
  1. Christine Aguilera
    And she always called my friend Christine Christina
  2. Josh Rogen
    Pretty sure she wanted to say Josh Groban and to answer the obvious question here, yes I have tried to mash up their faces on one of those mash up celebrity face sites and was unsuccessful
  3. "I don't know what this actor's name is, but I know his dad is Ed Begley..." "Um, Ed Begley Jr.?"
    Ok, not necessarily consistent with the rest of this list, but a story that deserved to be shared nonetheless