Ben Stiller imitated Joaquin Phoenix's appearance (in the David Letterman show, 2 weeks ago) during the Oscar-night. As it happens, the progressed Sun of Joaquin is conjunct the natal Sun of Ben Stiller and square his Saturn. That is because Stiller has a Sun square Saturn in his chart. What does it mean?
To keep it simple: Joaquin Phoenix progressed Sun is conjunct Ben Stiller's natal Sun. That means that they will share the same transits for a while. The transit that they share is a minor difficult aspect with Neptune. Ben and Joaquim are linked by the media and in a frustration way.
SUN CONJUNCT PROGRESSED SUN
The Sun conjunct progressed Sun of another person links your life and well being to the life of the other person. I have experienced a Sun conjunct progressed Sun with a transit of Pluto (conjunction) and this linked two lives in danger and transformation. The other person died of the same illness that I had and had that not been so, I would not have been warned and had a check up. So our lives got intwined.
They shared a moment of media (Neptune) attention (Sun). You knew that already, of course, but did you know that there was an astrological link between the two persons?
For more information about the astrology of meeting each other, sharing a period for a while or longer, see the article on my site Astromarkt.