

Check out this interview with one of the original "media theorists," Marshall McLuhan.  Published in the March 1969 issue of 
Playboy, he speaks candidly about how media forms "displace perception" - from the phonetic alphabet through moveable type to broadcast technologies.  (He also hints at the Internet, with ideas of a "global village" and cybernetics.)  The article has some great musings about technology and its effects on art, society, economics, etc...
Although the tone of his statements can be a bit dated at times - with his predictions of an imminent, violent social revolution (It was the late '60s, dude.) - we could say that the struggle between a culture of print and a culture of electronic media is very much still active - it doesn't feel like much has really been officially resolved since the time of the interview.  Perhaps he's right about a revolution, but maybe it's turning out to be more gradual than predicted.
Some great quotes:
"Through radio, TV and the computer, we are already entering a     global theater in which the entire world is a Happening. Our whole cultural     habitat, which we once viewed as a mere container of people, is being     transformed by these media and by space satellites into a living organism,     itself contained within a new macrocosm or connubium of a supraterrestrial     nature. The day of the individualist, of privacy, of fragmented or     "applied" knowledge, of "points of view" and specialist     goals is being replaced by the over-all awareness of a mosaic world in which     space and time are overcome by television, jets and computers--a simultaneous,     "all-at-once" world in which everything resonates with everything     else as in a total electrical field, a world in which energy is generated and     perceived not by the traditional connections that create linear, causative     thought processes, but by the intervals, or gaps, which Linus Pauling grasps as     the languages of cells, and which create synaesthetic discontinuous integral     consciousness."
"The upsurge in drug     taking is intimately related to the impact of the electric media. Look at the     metaphor for getting high: turning on. One turns on his consciousness through     drugs just as he opens up all his senses to a total depth involvement by     turning on the TV dial. Drug taking is stimulated by today's pervasive     environment of instant information, with its feedback mechanism of the inner     trip. The inner trip is not the sole prerogative of the LSD traveler; it's the     universal experience of TV watchers. LSD is a way of miming the invisible     electronic world; it releases a person from acquired verbal and visual habits     and reactions, and gives the potential of instant and total involvement, both     all-at-onceness and all-at-oneness, which are the basic needs of people     translated by electric extensions of their central nervous systems out of the     old rational, sequential value system. The attraction to hallucinogenic drugs     is a means of achieving empathy with our penetrating electric environment, an     environment that in itself is a drugless inner trip."
"Every aspect of Western mechanical culture was     shaped by print technology, but the modern age is the age of the electric     media, which forge environments and cultures antithetical to the mechanical     consumer society derived from print. Print tore man out of his traditional     cultural matrix while showing him how to pile individual upon individual into a     massive agglomeration of national and industrial power, and the typographic     trance of the West has endured until today, when the electronic media are at     last demesmerizing us. The Gutenberg Galaxy is being eclipsed by the     constellation of Marconi."
"People are beginning to understand the nature of     their new technology, but not yet nearly enough of them--and not nearly well     enough. Most people, as I indicated, still cling to what I call the     rearview-mirror view of their world. By this I mean to say that because of the     invisibility of any environment during the period of its innovation, man is     only consciously aware of the environment that has preceded it; in other words,     an environment becomes fully visible only when it has been superseded by a new     environment; thus we are always one step behind in our view of the world.     Because we are benumbed by any new technology--which in turn creates a totally     new environment--we tend to make the old environment more visible; we do so by     turning it into an art form and by attaching ourselves to the objects and     atmosphere that characterized it, just as we've done with jazz, and as we're     now doing with the garbage of the mechanical environment via pop art.   The present is always invisible because it's environmental and     saturates the whole field of attention so overwhelmingly; thus everyone but the     artist, the man of integral awareness, is alive in an earlier day. In the midst     of the electronic age of software, of instant information movement, we still     believe we're living in the mechanical age of hardware. At the height of the     mechanical age, man turned back to earlier centuries in search of     "pastoral" values. The Renaissance and the Middle Ages were     completely oriented toward Rome; Rome was oriented toward Greece, and the     Greeks were oriented toward the pre-Homeric primitives. We reverse the old     educational dictum of learning by proceeding from the familiar to the     unfamiliar by going from the unfamiliar to the familiar, which is nothing more     or less than the numbing mechanism that takes place whenever new media     drastically extend our senses."
"It's always been the artist who perceives the alterations in man caused by a     new medium, who recognizes that the future is the present, and uses his work to     prepare the ground for it. But most people, from truck drivers to the literary     Brahmins, are still blissfully ignorant of what the media do to them; unaware     that because of their pervasive effects on man, it is the medium itself that is     the message, not the content, and unaware that the medium is also the     message--that, all puns aside, it literally works over and saturates and molds     and transforms every sense ratio. The content or message of any particular     medium has about as much importance as the stenciling on the casing of an     atomic bomb. But the ability to perceive media-induced extensions of man, once     the province of the artist, is now being expanded as the new environment of     electric information makes possible a new degree of perception and critical     awareness by nonartists."