Only the most gifted students are able to develop their musicality alone. A video might be better than nothing, ok, but the most important step of an aspiring student is to find a good teacher imo.
I disagree. Danny, I concurr with you that the most important step of an aspiring student is to find a good teacher. I completely agree with you on that.
However, why didn't any of you guys consider videos as
complement for you piano learning?!
For example, in my case, I have classes once a week with a teacher, who teaches me piano-playing and mostly harmony for composing and improvising. And I find great to learn from other sources too!
Ever watched the Bob Estrin's videos I mentioned?! For example, he used to explain when to use the sustenuto pedal, and how some pieces should be interpreted, and sometimes its nice to hear something for another source. In my case, it happens a lot that I read stuff on the internet or watch videos and then I analyse the cases with my teacher.
In the case of this ColdPlay video I found it amazingly helpful. I am used to play classical music (chopin, bach, beethoven), but playing popular music is my weak point! There are sometimes, some combination of chords that are not the standard progressions or the basic chords, that you cannot reproduce in the piano in a short time. So for me was great to see the Coldplay progressions, as I can use then to compose, or to catch faster another piece that uses the same harmony resources.
So, I would say, that for a begineer, I concurr. If you are just learning piano, and you want to learn JUST from videos, then you must probably consider yourself lost, as videos are NOT interactive and that's their main fault. However, I think that videos are an EXCELLENTE complement for piano learning, and a great source of learning for intermeddiate and advanced students.
Cheers!

Rod