As one of the younger ones (born in '85), I'll take exception with some of this:

- There has always been cable and satellite TV.  None of this 13 channels on the knob/rabbit ears nonsense.

What's old is new; I've currently got rabbit ears plugged into my TV... a 37" flatpanel LCD HDTV. My families first television (during the era of Me) needed a cable box, because the TV itself was of the knobs variety. When the cable was out, we'd pull the rabbit ear antennas out and use the dials. But it was high-tech! You could program each button with a little knob to tune it into a certain frequency.

I get something like four channels, two in English, and only one of those comes in clear. From outside the country, ABC is audible, but barely visible.

- The oldest media he knows is the cassette tape. ("Turntables?  8-Tracks? What are those?")

I owned several turntables and an 8-track player. Just because cassette tapes existed didn't mean they had completely displaced everything else.

- The Cold War was over since he got out of diapers

I'll admit that I was a bit older than Les. I vaguely recall the end of the cold war. I was 6 at the time.

- MTV's always been around.

MTV has never been around, and I've never seen it. There was MTV Canada, but you had to pay extra for that, and we didn't. The only things I know about MTV is what I've read about it.

- He's only seen black-and-white TVs on movies and old TV shows.

Almost. A few of my favourite movies are black and white, and my grandmother's TV was black and white. Oh colourburst, what a wonderful invention you were.

- Atari was always obsolete.

Obsolete, or retro? Growing up, my cousins had a 2600. I recall suffering through ET. A lot. I don't know why I kept trying to play it. Anyhow, the NES (which was all that was out at the time) was indeed a big leap forward, but not by such an incredible margin. The PS2 might be obsolete today, but it still gets a lot of attention from gamers. And the PS2 -> 360 shift is perhaps analogous to the 2600 -> NES shift, although perhaps not as large.

- The Vietnam War is only history book stuff, like World War II.  And Operation Desert Storm was done while he was in preschool.

Worse still, I didn't even hear about Desert Storm until well after it ended. Then again, it was a foreign war fought by foreign countries.

- All cola bottles have been non-returnable.

All cola bottles, glass or plastic, and metal cans, have always been returnable, and still are to this day... Is this not the same everywhere? Why wouldn't they be returnable? Does the government not require this to be the case in the US?

I've many memories of taking garbage bags full of soda cans and plastic bottles to stick into the crushing machines to get the 5 cents per bottle/can refund. My parents would let me keep the refund for the task of recycling them, and trust me, that was big money when you could by Swedish berries for a penny a pop! Videogame rentals and CCG cards were a frequent way to spend that money too.

- All gasoline has been unleaded.

Except for diesel, sure.

I'm only 3 or 4 years off Les, surely not that much changed in 3-4 years that you'd go from my experiences to what you describe?