Yeah, I was pretty surprised when I found that out. After the way he butchered my favourite television franchise, I kind of lost a lot of respect for him as a director. And this is coming from someone who really enjoyed Lady In The Water, if only because the characters were so memorable.
Oblivion is not a bad movie. It's not a good movie, but it isn't bad either. I have to side more with Rotten Tomatoes, who gives it a 53% with 215 reviews. Bafflingly, IMDb gives it a 7/10 with over 150 thousand votes.
I want to say it was 'visually stunning', but it really wasn't. It felt flat, sterile, and without much character to it, and the same can be said for Tom Cruise in this film, who seems to be riding the crazy-train in this movie. At least he's enjoying himself. The acting is well done, which is unsurprising since it's a cast populated by Hollywood A-Listers, but the same can't be said for the story or characters, who are all bog-standard sci-fi tropes. Which can be the most I can say about this film. It's a bog-standard sci-fi action film. Pretty typical summer fare, designed to cash in at the box office.
The "big twist" in this film isn't actually all that jarring, and is well integrated into the plot, although it does leave a weird after-taste in your mouth at the film's conclusion.
Overall, I'd have to say that this film commits the worst crime of all: It bored me. Not that the pacing was bad, the pacing was fine. It was just that the film is so typical sci-fi fare, that it just fell flat. The best sci-fi should say something about the human condition, but the message this film sends is so dull and trite, and the characters so uninteresting and unengaging, that we don't connect with them enough for the ending to have any impact.