YouTube video

"MAKUHARI--Think Tetris, but with garbage. That's the simplest description of Gomibako, a PlayStation Network puzzle game we found in the Sony booth here on the show floor of the 2008 Tokyo Game Show. It's a bit early for proclamations--we're only halfway through day one of TGS--but we can safely say that Gomibako is one of our favorite games of the show so far.

The goal of the game--if our understanding of it is correct--is to pile as much garbage as you possibly can into a huge junkyard crate without making it overflow. Various items (such as mattresses, teddy bears, bicycles, huge plastic slides, fire extinguishers, statues, and flaming swords) drop from a garbage carrier overhead, and you have some control over where and how they are placed." (source)

TGS 2008: Gomibako Hands-On (GameSpot)
Gomibako gameplay video (starts at 10:00)
Hands On: GomiBako Not a Trashy Puzzle Game (Wired)
Sense of Wonder Night 2008 finalists