When Stewie says, "We all know who the other actress is" about the movie Black Swan (2010), it refers to Mila Kunis who voices Meg.
Bruce McGill plays the voice of "Lincoln Cabinet Member." McGill actually played a member of Lincoln's cabinet, Edwin Stanton, in Lincoln (2012).
Brian makes a joke then says "Bazinga". Peter laughs and says "like what the gay scientist". He is referring to Jim Parsons (who plays scientist Sheldon Cooper on the Big Bang Theory known for his catchphrase "Bazinga"), who is gay in real life.