Any list that doesn't include Grand Hotel is immediately suspect.
Anything Goes is a better showcase for Foster and the magic of tap than Forget About the Boy. Heck, I'd even mashup the Foster and Lupone performances.
Spring Awakening was not a great performance - the author seemed more entranced by some self-believed significance of the show and cast.
Since Applause was the first Tony performance I recall seeing live - I'd have to include it. Also, in my opinion, it's one of best performances.