Well if you want a more technical look at aircraft systems while flying in an airliner. I might suggest looking at the ITVV series of videos. (The A320 is my personal favorite, that and the Concorde one they do.)
If you want to look more at scenery and a variety of routes and countries then the World Air Routes/ Just Planes people are great too. World Air Routes/Just Planes has a much wider selection of airlines and aircraft types than ITVV, but the systems demos generally aren't as in depth or sometimes non-existent depending on title in question. There is also another series produced by a company called Avion that does Just Planes style spotting videos as well as some vintage type stuff. I haven't seen any of these myself, so I can't vouch for the quality.
Give me a mile of road and I can take you a mile. Give me a mile of runway and I can show you the world.