"Django Unchained" is a Tarantino western, and delivers on everything that that promises. It is not as badly paced as his other recent works, but not nearly as tight as his early work. Christoph Waltz stands out as both an actor and a character. This film will confirm your pre-existing opinion of Tarantino; we think he makes amusing blood-soaked fluff.
"This is 40" is billed as a comedy, but isn't one. Rather, it is a stupid-people-being-unhappy slice of life, with occasional injections of over the top vulgarity. This movie is not as unpleasant to watch as "Knocked Up", and it does have a few (very few) genuinely funny moments, but it is still generally unpleasant to watch. The difference is that I expected to dislike "Knocked Up" going in (Dementia over-rode my veto), and I expected to LIKE this one.
"Cirque du Soleil: Worlds Away" is visually and athletically stunning. It serves up a significant sensory overload, which make the 90 minute running time about 30 minutes too long. The cursory effort to create a wraparound plot fails. There are several sections of the film that I LOVED, and would not mind seeing again, and in slow motion. I don't regret seeing this movie at all, but I was also very glad when it was over.