Oh Floyd....why do you rock so much?
Because they are Gods among men.
As far as albums that flow well into each other:
Lucky Nine - True Crown Foundation Songs/Hundred Reasons - Kill Your Own
Radiohead - OK Computer/Wilco - Yankee Hotel Foxtrot (hmm..odd that both of them have a sucky closing track.)
Nirvana - Nirvana/Pixies - Wave of Mutilation
Weezer - Weezer (Blue)/Marcy Playground - MP3
Blur - The Best Of/Graham Coxon - Happiness In Magazines
Nick Cave - The Boatman's Call/Nick Cave - No More Shall We Part