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I'm pretty sure the movie your talking about is called Epoch: http://en.wikipedia.org/wiki/Epoch_(film)
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Hmm, not sure - as far as my memory serves it was more a sort of lump of slime as opposed to a structure. My memory sucks, though, and I can't seem to find a complete plot synopsis, so I've ordered it off Amazon. I'll let you know once I've watched it :P
Cheers for the suggestion though.
Invasion: Earth? Your description matches the plot pretty closely.
Edited by Aspectifer
Yea it is definitely Invasion: Earth. Episode 6 to be exact.
Right. I saw half an episode of some sort of Sci-Fi thing years ago. There's this alien invading Earth, and it's essentially a mountain-sized black lump that's leeching all the nutrients out of the soil or something. Apparently it was dropped down as a weapon by an alien race, but they can't drop more than one because the power required to sustain two at once is infinite.
Some dude figures out how to communicate with the black lump through his laptop. Black Lump invites him inside itself, and the dude accepts, only to find the alien was pulling his chain when it eats him.
The military manage to kill the thing by flying a jet through a passage in its body and killing its core. The lump withers and disappears, only for a second one to promptly pop up in its place. The episode ends with a general informing his men that he's authorised the use of nuclear weapons against the lump, telling them he wants to show the aliens that humanity is willing to burn their planet to keep them off.
This has bugged me for YEARS. Whoever can tell me the title, I will buy you a private jet when I am rich and famous and rule the world. I might also just be really grateful. One or the other.