In the scene where Liam and Micki are watching a movie, Liam mentions how The Rock sounds like Richard Simmons and Micki asks 'Who is the Rock?'. Kelly Hu starred in The Scorpion King (2002) with Dwayne Johnson (The Rock).
When Joel returns to the table he is clearly seen holding a single serving butter pack in his left hand as he sits down, but as we switch to a different camera angle, he is holding a fork.