Humpday Challenge
From Halopedia, the Halo wiki
The Hump day Challenge is an event where every Wednesday (Hump Day) Bungie staff have it out with a fan site, group or pretty much anyone in a three game Halo shootout. One recent outing pitied the Bungie staff against the Fragdolls
The Chosen Few
To be selected by Bungie for a Hump day Challenge is a challenge in itself. They don't play anyone based on ability . They pick teams to play based on community activity. i.e. Other companies or a group that has somekind of niche. Their interest isn't in beating the best but in mutal publicity that the Hump challange brings. Bungie plays for fun, and probably enjoys winning against non-professional players.