InceptionAdd this to 'Inception's' list of puzzling, only-in-dreams feats: it's grossed $100 million in just seven days.

Having opened July 16 with an impressive $62.8 million weekend debut, Christopher Nolan's brain-bending sci-fi thriller continued to perform strongly throughout the week. As of Friday morning, July 23, according to estimates from distributor Warner Bros., the film has barely squeaked into the $100-million-in-one-week club with a total gross of $100,155,000.

Big deal, you say? Well, it doesn't happen as often as you might think. In fact, it's only the fifth movie this year to do so, after 'The Twilight Saga: Eclipse,' 'Toy Story 3,' 'Iron Man 2,' and 'Alice In Wonderland.' Plus, as Deadline Hollywood notes, it's the only film on that list that's based on an original idea and is not a sequel or reboot; nor is it in 3-D.