The Raft was the most interesting segment
Something about The Raft segment was so simple and yet so effective. And honestly, its not that far fetched of an idea when you really think about it. New species and life forms are discovered in bodies of water all the time. So the idea of a blob-like creature floating in some secluded lake isn't that unbelievable to me.
But seriously, that would be a really messed up situation to be in. Honestly, I would be terrified. And that ending, where the blob jumps out the lake and consumes the last remaining survivor...that was messed up and awesome all at the same time. That guy should've moved further away from the water.