The Russian nurse who speaks to Ilana in the hospital is portrayed by Sonya Masinovsky, who was a production assistant during the fourth and fifth season of the series. It is her only acting credit.
The first time inside Jacob's workroom, the flames from the fire are going backwards, indicating the video was time-reversed - perhaps to indicate that time doesn't work right in Jacob's presence.
5 minutes in - The band on the front of the lunchbox that Kate tries to steal from the store is New Kids On The Block. The lunch box was later used for Kate and Tom's time capsule.
35 minutes in - In Jacob's cabin there is a painting sitting on the ground, on its side, of a dog that looks identical to Vincent (golden lab).
Jacob's tapestry contains two Ancient Greek phrases from Homer's Odyssey: "May the gods grant thee all that thy heart desires" and "May the gods grant thee happiness."