What is art? (Resumed)

Hello, I am blogging. This is not art. I do not plan to rehash the important argument that has been waging (itself) for ages, "What is art?" I daresay I am nonetheless interested in opening this box of contentious goodies, and so I continue this post with the following link:

Art Now:... by Leon Botstein

For those of you wishing for a summary in lieu of taking the link, I will offer one albeit based largely on the title of the talk. The man named above will speak on February 29 in one of New York's public libraries. The email bulletin I received claims that he will discuss various topics on the theme of aesthetics. These topics include

"Music, Painting, Architecture, Movies, and More."

Could all of these things be art? Which ones? How can one decide? I will weigh in on this or completely different questions after a bit more research and attending the dude's talk and question and answer session. It is my hope that those of you riled up enough to comment take a moment to do so. As for a hint on where I stand on some of these questions, I give you an image (used under the terms of the GNU Free Documentation License, Version 1.2; obtained from Wikipedia) of Leon: