The other day Sarah Shahi tweeted a pic of her and Amy Acker working together on Person of Interest. @AmyAcker and I spending the day together pic.twitter.com/RdYVXPWge0 — Sarah Shahi (@onlysarahshahi) September 12, 2013 Sarah Shahi and Amy Acker: I think that’s an interesting combination of stars. Two people that you might not ever expect…