"Sir, are we being too literal?"
"No, you fool! We were told to comb the desert, so we're combing it!"
There is only one Emperor and he doesn't share power...
"I know. That's why I threw him into mount doom when we conquered Mordor. He wont come back from that.
Vader was plotting to usurp the Emperor, like any good Sith, so the Ring wouldn't have to try at all to instantly corrupt what little good was left in him.
Was that in the original trilogy? Or extended universe stuff? I don't remember anything about it but I never read any of the EU books.
Empire Strikes Back. "Luke, you can destroy the Emperor. He has foreseen this. It is your destiny. Join me, and together we can rule the galaxy as father and son."
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Adding to Samus' comment, it's also an EU thing. Yoda mentions in Phantom Menace that there are always two Sith, the master and the apprentice. This is because of a rule set up around 1000 years ago by Darth Bane. At his time, there were hundreds of Sith with academies teaching new Sith kinda like the Jedi do. By the end of his book trilogy, he set up the new pattern of exactly two Sith at any one time - a Sith master to embody the power of the dark side and an apprentice to covet the power. The apprentice proves they are ready to take over by killing their master, and thus the Sith only ever grow stronger. This lineage continued until Vader and the Emperor, so they were both expecting Vader to eventually challenge the Emperor
EDIT: Although in some of the books which are probably EU now, I feel like Palatine was so cocky that he thought he was the chosen one of the Sith, called Sith'ari I think, and so he would always be the master and Vader always the apprentice
The Sarlacc is probably the only creature that hates sand more than Anakin. It gets everywhere.
that line throws me off too but it was at least unlikely given gollum's place of residence