When Russo is at the rental shop after arriving in Massachusetts his rental car, with Mass. plates, has a Virginia inspection sticker in the center of the windshield.
Once he arrives at his destination the inspection sticker has been removed.
In the scene in the Metro, the platform red lights on Francis's side are flashing, indicating an incoming train. No train arrives, but a few minutes later, one arrives on the other platform.
Early in the episode, Claire and Evelyn discuss the firings that will occur that Friday, and those firings occur towards the end of the episode. Between them, Michael Kern appears on This Week with George Stephanopoulos, which only airs on Sundays.
After waiting on the steps, Zoe makes a phone call. When the phone is up to her ear the screen of the phone is flashed briefly into the camera and you can see the iphone "slide to unlock" from the lock screen. The phone would not be locked if she were making a call.
When the actors watch the CNN and other news outlets on TV, there's usually a stock ticker showing stock quotes streaming across either the top or the bottom of the picture. The quotes are moving from right to left when they should be going from left to right.
When Peter Russo is looking at his laptop screen while on his flight to go see Roy Kapeniak, his Windows 7 shows the icon (bottom right) for Internet access connected through wire and not Wi-Fi.
Rental car's license plate is not a Massachusetts plate. The style of the digits is not correct.