There are so many, it's really hard to pick just one. The Binary Sunset, the Asteroid Chase, Vader totally owning Luke as he drives Luke out onto the catwalk after knocking him out the window in the ESB duel. These movies are FILLED with iconic scenes/sequences that resonate very strongly with my sense for adventure, longing to explore, and desire to "take the difficult path" to achieve self-improvement. But ultimately, I had to go the scene depicted above. The music is just incredible. The sense of wonder as Yoda effectively demonstrates just how much the Force can do.... I love it! And I can totally relate to Luke training under an expert who pushes you so hard that you reach your ends and feel that it just cannot be done, only to watch the master do the very thing so effortlessly when you've failed in order to prove that it can. (I think anyone who's ever seriously trained in a traditional martial art has at least one story like that.)