"Inception" trailer - AND - Inception/UP mashup

This is the newest offering from Christopher Nolan, who has directed seven films, including Memento, Insomnia, Batman Begins, The Prestige, and The Dark Knight.  Quite an impressive résumé and success rate!

The Atlantic has a review.
And here is Roger Ebert's review.

Addendum:  Now see the mashup of Inception + UP:

Via Nerd Approved.

Even better - play them simultaneously.  They both have the same runtime and same audio (that of the Inception trailer).  So start them both at the same time (it may take a brief tap one pause button or the other a time or two to get them absolutely synchronized).