Manchester United clinched the 2010/11 Premier League by drawing 1-1 with Blackburn Rovers at Ewood Park on May 14, 2011. After the referee blew the final whistle, the United celebrations started in earnest, with the title ensuring that they had overtaken bitter rivals Liverpool as the most successful domestic club in England. United were officially presented the trophy after beating Blackpool 4-2 in their final game of the season.
Man United celebrations- after beating Blackpool 4-2 in final game of the season= Trophy presentation
Man Utd celebration video- after Blackburn game- Premier League Winners ( Champions 2011)
All United players ( Rooney, Vidic and co.) as well as their long serving manager Alex Ferguson were involved in the celebrations. You can also see Utd fans putting up banners with the number 19.
( Credits of this Man United celebration video 2011 with uploaders at youtube)