Sometimes I wish we did that, but then I'd really worry about what sort of personalities might be unveiled. One firm rolled a keg into the dining room once a month to celebrate everyone who had a birthday that month. Then everyone adjourned to their favorite watering hole or dive. Even then I wondered about the liability they were taking on, since some folks got sloshed right there in the company dining room. Maybe it was a team-building exercise - protect and cover for your drunk colleagues.