Art is an extremely vague term to speak about. Usually when someone is trying to describe the word "art" or uses it in some kind of a context thereby shows his purely subjective cultural experience or lack thereof. Well, let's say... Duchamp's Fountain perfectly demonstrates that anything artist wants could be considered as an art. Framed horse rump on the wall, maybe? Why not? I'm having problems distinguishing "art" from "non-art", thus I'd say practically anything in human culture that could possibly be considered as an art is in fact a piece of art. In other words, if artist creates - it's and art, period. So, yes, the most blatant game out there is a piece of art as long as it's a part of human culture, like it or not.
Though public perception of games as an art form is under question. You mentioned Hollywood once in your topic, making it like a bad path for gaming industy to follow. I'm not sure of that. Film industry != Hollywood, but the latter to some extent made a valuable contribution to the whole industry by moving it to mainstream public, widely accepted phenomena. In finale it's not only a successful business, but a good way for ambitious artists to express yourself. I highly doubt that gaming industry, though very close to overcome film industry by total revenue per year (if not already), will ever achieve this level of public acceptance. Nowadays it's too concentrated on very active sales-wise but age and gender specific public.
