Airshow is on other airlines too from Lufty to JetBlue.

I will watch that all the way and forgo the movies. I have even seen it used from YVR to YYC.

Watch the Outside Temperature vary as you cross the Atlantic and cross reference with the ground speed. The warmer the air the greater the airspeed and thus generally a better groundspeed also. You can sometimes also see the Altitude vary as the aircraft moves up or down to avoid strong headwinds or gain a better tailwind.