Blueski is an interlude track fo sho, but its a damn good one.
Rowla on the other hand, while being a great track, is different from the others in that there are plenty of other techno tracks that do the whole resonanant synth with the filter opening thing 10 times better. Or at least to me 10 times more up my alley
All the others are so unique from everything else that came out before or since.
This album was the one that sold me on Underworld and got me to dive head on into electronic music, so I don't think I can continue to participate in any further polls. Just tooo good.