The new Travelers commercial may look vaguely familiar to those who are Katamari Damacy fans.  The commercial is a take on the snowball effect and it's very well done.  Here is a link to the commercial.

Here are a couple more Katamari-like videos:

MSF put out a commercial to raise the awareness of the spread of HIV.  It's a somewhat disturbing commercial that definitely illustrates how serious the spread of HIV is.

On the lighter side, here is a guy in a Katamari costume rolling a ball around the town.  My favorite part is where he goes one-on-one with a basketball-playing kid.

Previously:
Coca-Cola commercial done GTA style, Real Life Super Mario Bros. Re-enactment, Real World Donkey Kong, Day in the life of a gamer, Space Invaders 2006, Reality video gaming, Grand Theft Lego