IGN: We're at a critical turning point in this season where things had to move forward quickly to setup the final sprint to the end of Fringe lore. After this week, we've got 6 installments left and a little over 4 hours of actual story when you subtract commercials. This episode really needed to get things moving, and boy did it deliver.
The best episode this season by far. Peter will soon be gone though i think =(