Damn... since this thread comparing Obama with the anti-christ ive thought again a lot about this subject of the end of the world... i always used to think about it, and now i did it again... interestingly, my views are much like the ones some of you described... i also think the beasts mark will be a kind of chip which would be connected with some central computer, and probably all peoples financial, social, personal, etc informations would be stored there, so anybody would need to have this chip to buy or to sell (which is what is said about the beasts mark).
I also believe the beast from the earth with ten heads and seven horns will be some union of countries, more exactly 10 countries and 7 kings (or rather presidents). They will have control over all "nation, tribe or tongue", and so will force everybody to be marked with its (beast's or country union's) mark.
I dont know very much about the beast from the sea... i think it will be a person of a group of person (maybe some "religious" organization), with great powers to make "great signs", and which will give "life" to the earths beast image... i think this beasts image would be some kind of supercomputer, so evolved that people would (wrongly) think it were alive (or at least conscious).
If i remember rightly, people would be forced to revere this beasts image... what would be what any government would force people to do, if they constructed something "alive" or thinking... probably they would say it was "god"... poor of them... to think that the Almighty God could be a man-made machine...
I also believe the final end of the world will be the fall of some meteor, which will put a definitive end to it... There is still a lot of things i could say about this... but it would make this post way too long... and hopefully somebody else will have the same views, will post it, and spare me from the work of writing it... :P