Peach Blossom is a short Flash animation created by Matt Roszak. It was uploaded to Newgrounds on February 14, 2009.
It can be viewed here: http://www.newgrounds.com/portal/view/483118
Description and Trivia
Peach Blossom is a simple "animated Valentine's Day card" based on the Super Mario Bros. series and the old "Loituma Girl" meme. It depicts Princess Peach cheerfully spinning a Turnip in her right hand and singing a looping snippet of "Ievan Polkka" against a pink background and a border of flowering branches. The words "Happy Valentines!! - from Peach" are written along the top and bottom of the border.
Aside from the Mario and "Loituma Girl" references, the animation has several references to the Super Smash Bros. series. Its name and the border of flowers come from Peach's Final Smash (introduced in Super Smash Bros. Brawl), and the fact that Peach is twirling a Turnip is likely a reference to her recurring Down+B Special in the series.