So what does the Plane represent?

I'm with Amelie Gillette:

Blogging about Snakes on a Plane just isn't fun anymore. I'm kinda over the hype. Ha ha, it was a good joke, and kudos to Sam Jackson for getting it made, but the whole movie is basically a joke, and I'm not going to rush to the theater to see it (although it's definitely going to be worth renting eventually).

But the worst part, as Amelie notes, is that the simplicity of the joke may be getting lost. Let's go back to what Sam said:

They had already changed the title when I got to Canada to start shooting. I let it go for a while. Then one day the producers were standing there, and I'm saying, 'so are you seriously going to leave (the) name on this?" And they're going, 'Yeah, we don't want to give too much away to the audience.' I'm like, 'Yeah, you do. That's the way you get them in there. Nobody wants to see Pacific Air Flight 121. People want to see Snakes on a Plane.'

Contrast that with this:

Anyway, the song is by Cobra Starship, a side-project of Gabe Suporta (of the band Midtown), who wants his song "Snakes On A Plane (Bring It)" to mean something more than, say, "there are actual, literal snakes on an actual, literal plane...so bring it." He told MTV.com:

"We actually didn't want to make it too literal about snakes on a plane, so we used a metaphor of snakes being like shady dudes," Saporta said on the set of the video.

Memo to Cobra Starship (get it? Cobra? Snakes?):

The Snakes should represent.... Snakes. The Plane should represent..... a Plane.

That's it. Snakes. A Plane. What's so hard to understand?