Not long back from watching it. I had a blast, thought it was brilliant. The only slight down side to it, and it is only a minor quibble, is trying to explain to two young lads, who aren't Star Wars geeks like my generation, the timeline of when it is set compared to the other movies. We all get it, but with the original movies, the prequels and now the next three ongoing movies I can understand why they were a bit confused at some of the plot.
As a one off movie though, it stands up fine and is well worth a watch and only confirms once and for all that Darth Vader is one of the best characters ever in movie history. No matter the age of the people around me today, when that music hit, you could sense the menace in the air. Magical.