Inception, Best Film of 2010?

Last night, I saw what is so far the best movie of 2010, Inception.  Wow, what an amazing film.  I was blown away by its complexity and genius storytelling.  Christopher Nolan wrote an amazing screenplay which held the viewers attention through its amazing twists and turns.  The plot could have gotten out of hand and lost the intended audience, but by using certain visual cues to help viewers remember which dream plane they were on, everything ended up making sense in the end.  The acting was excellent.  Joseph Gordon-Levett was amazing.  Every time I see him I always flash back to his 3rd Rock from the Sun character, which I didn't like.  In this film, however, he showed his acting chops and wow, I was impressed.  The only part that bothered me was the ending, which was left ambiguous.  I am one of those people who like happy endings.  I want the fairy tale.  Everything can go wrong during the course of the film but by the end I want everything to turn out ok.   I therefore choose to believe that at the end of Inception, (Spoiler Warning) Leo's character returns to the real world and his kids.  He is not still in a dream.