For the people of Port-au-Prince, the last six months have been fraught with difficulties in the wake of the catastrophic earthquake that left their lives in shambles. But while the images out of Haiti still show displacement and poverty, they were replaced yesterday -- at least for a few hours -- by a sense of uncontainable excitement, as Haitians poured into the streets to greet UNICEF Goodwill Ambassador Lionel 'Leo' Messi.