forward to 0:30 and watch from there onwards.
so basically (if you haven't bothered to click on the link) this guy took his girl for a stroll in the park, where he had it all planned, backup dancers, video setups etc
they broke into a song, to which they danced to carefully planned choreography, and at the end, he proposed to her, in front of everyone in the park!
now, when will it be my turn? :D