1. "The not Thor, Hemsworth?"
    Chris Hemsworth, no wait, Liam Hemsworth, yep, it's Liam, the not Thor one.
  2. "You know, Seth Rogen's friend?"
    Jonah Hill. This was pre Rogen/Franco bromance, of course.
  3. "Not Alison Brie but....?"
    Brie Larson
  4. the redhead that's not amy adams but basically is?
    isla fisher
    Suggested by @manda
  5. "The girl that's in the other Hunger Games franchise?"
    Shailene Woodley
  6. "The cool Aunt from Six Feet Under?"
    Patricia Clarkson, however she is one of my favorite actors and I could use way more examples than this one but "the cool aunt from Six feet under" seems to do the trick whether it's me who forgot her name or someone else asking who she is.
  7. "No, not the geek from Sixteen Candles, the one who played Duckie"
    When I'm trying to differentiate between Anthony Michael Hall & Jon Cryer (FYI the character's name in the movie is Geek)
    Suggested by @kate81