I was kind of disappointed when I saw how much the story had been changed, but I think this version has its merits. I'm sure a lot of changes were made because of time constraints and a limited budget, but they still could have made it truer to the source.
The scenes in the bathroom and the one with the cop, however, make this version worth watching.
Those who haven't already should seek out and read the original story by George R.R. Martin.
Part 2: http://www.youtube.com/watch?v=cfdZPa448RI
Part 3: http://www.youtube.com/watch?v=h-Ovpo-dRdg
Part 4: http://www.youtube.com/watch?v=XFozPYNeEsk
Part 5: http://www.youtube.com/watch?v=gqb-3tj_Fck
Part 6: http://www.youtube.com/watch?v=uzI44EEdmu0
Part 7: http://www.youtube.com/watch?v=tRjyykA8faU
Part 8: http://www.youtube.com/watch?v=9jb_KO6CApQ
Part 9: http://www.youtube.com/watch?v=XpVx8P8hoBY
Part 10: http://www.youtube.com/watch?v=b-X0KOqfnF4
I seem to recall there was one clips/anthology episode where they tried to reconcile all the varied alien invasions into one coherent continuity. It almost worked.