I don't think it's from the gas itself, but from the immediate condensation of the cooling from the expanding gas.

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Numbers are not case sensitive. (me)

That's the third one. I know, because I haven't seen it.

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Gillian

"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"

"You can't erase icing."

"I can't believe it doesn't work! I found it on the internet, man!"

You're probably right. I've only seen the first movie all the way through. In fact, I didn't know there were two sequels.

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"All natural, huh? So is lightning." - Mike Rowe

The third one really isn't worth knowing about. I can't even recall if I wasted the money buying it, if I did, it was likely only to say I had the complete set.

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Howling from the Shadows

It must be fun to lead a life completely unburdened by reality. --- JayUtah

You can't reason an irrational person out of an irrational belief. --- Noclevername

Apollo: The History and the Hoax
Enter the World of Athran

Thanks, was having a brain-fade day.

One and a half, really. In fact if you discount all the recycled jokes from the first film, they barely add up to one sequel.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

It's very prominent in Yojimbo (1961), but without the popping noises and clearly done to remove kinks in muscles before fighting.
Oh, and because he's itching from not having bathed in a while

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An emperor without enemies, a king without a kingdom, supported in life by the willing tribute of a free people.

Here's another one: horror movie endings. Everybody's going to die, or the bad guy/evil spirit/constipation wasn't truly defeated and returns right before the credits.

Ya, that was it.

There are no new ideas these days. Even BSG, the best sci-fi on TV right now, is a re-imagining of an earlier series.

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"You miss 100% of the shots you don't take" - Wayne Gretzky

Well, "Heroes" is fairly new (for television), even if the concept of superhumans isn't.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

It's been planned for some time now. You can catch reruns of the original American Gladiators on one of the ESPN channels.

I actually enjoyed Gladiators. The competitions were fun (some things I'd enjoy doing) and the galdiators were buff but human (they lost some of the time). I fear the new version will be reworked to make it "better" but won't.

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Never attribute to malice what can be adequately explained by ignorance or stupidity.
Isaac Asimov

The middle seasons were good. After a while it became just "another day at work" for the gladiators, and they resorted to too many gimmicks.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Heroes is a good show indeed. I don't count it as sci-fi, though, and it really is just another medium (super hero comic books) done well on TV, and that's been done before, just not very recently.

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"You miss 100% of the shots you don't take" - Wayne Gretzky

That one is so overused.
You think you're safe, and then, just before the fade to black, you see something (especially somebody's eyes) glow an evil color (usually red), or hear snarling or maniacal laughter.
Similar cliche from movies about alien hunters/ cryptozoologists:
The team is heading home, and decides that whatever they saw is just a fluke. The only person who believed/first person to see the whatever looks out the back window and sees something that proves it was real but keeps it to himself, usually some variation on the whatever waving good-bye.

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Rovers forever! - ToSeek
"The only way to explore the universe is to go and look." - Brian Cox
Well, the best way to find out is to go there and, find out. - Raven's Cry
'Evolution and science are one thing, but you don’t mess with Yoko Ono. Everybody knows that. ' - 386sx

That's basically how Lovecraft's At the Mountains of Madness ends, and it was written back in the early '30s.

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"You miss 100% of the shots you don't take" - Wayne Gretzky

If that is the origin, it is not a cliche.
Every movie that ends with the mermaid's tail sticking out of the water and waving good-bye to the kid in the car is.

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Rovers forever! - ToSeek
"The only way to explore the universe is to go and look." - Brian Cox
Well, the best way to find out is to go there and, find out. - Raven's Cry
'Evolution and science are one thing, but you don’t mess with Yoko Ono. Everybody knows that. ' - 386sx

It may have been a cliche even when Lovecraft wrote it, but it does point out just how old that particular cliche is.

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"You miss 100% of the shots you don't take" - Wayne Gretzky

Lot's Wife.

I'm pretty sure there was an occurance in Gilgamesh, too. And what was the name of that Greek guy who got his wife out of Hades, only to have her look back and be lost?

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort