Thanks Shadow, now I'll have nightmares about that one.
That's the Statue of Happiness from GTA IV. It even has a heart, affectionately called "The Heart of the City":
[img width=700 height=560]http://www.gta.cz/data/gta4/Clanky/easter_eggy/srdce02.jpg[/img]
There's also the abandoned stroller that you can find. It makes you think what happened to all of the children in Liberty City:
[img width=418 height=235]http://static.gamesradar.com/images/mb/GamesRadar/us/Features/2008/05/Top%207%20GTA%20IV%20Easter%20eggs/Screens/Baby%20stroller--article_image.jpg[/img]