Already this week, we told you about how had hit the 30-million user mark, we gave you a look at leaked screenshots for the , and we offered a review of the app.

Other new and updated apps that caught our eye this week:

: If you've ever wanted to make your home movie look like it has big-budget special effects, you could probably do worse than turn to the folks at Bad Robot--the production house for Star Trek and Super 8 director J.J. Abrams. , a free app for iPhone and iPad that lets you add explosions, missile attacks, lasers, and more to videos of your backyard barbecue. This week's update offers four new "sci-fi blockbuster" effects: "Robo attack," "laser blaster," "alien burst," and "space destroyer." There are also new user interface features, including pinch-to-zoom and drag-and-drop tools that make it easier to turn your home movies into something special.

: Lots of getting-things-done apps remind you when to accomplish certain tasks. , a $2 iPhone offering, does that and more--it reminds you where to do those things, too: Double-tap a location on the app's map, and when you arrive there it will alert you to the task in need of accomplishing. This week's update improves the maps available on the phone, offering users the ability to see satellite and hybrid views of neighborhood, as well as the ability to place a pin anywhere on that map. The update also includes new features to help users set recurring reminders or hit "snooze" on tasks they're not yet able to accomplish.

: Here's an app for people who want to stay caught up with the news, but don't necessarily want to dive too deeply past the headlines. , a free iPhone app, offers a photo-rich summary of the day's top news stories--but, unlike other aggregation services, promises not to provide you with five different versions of the same story. Instead, you get a bullet-pointed overview of the most important stories: It's like getting a PowerPoint summary of the day's news.