DC office catering/delivery (15-20 people)- ethnic cuisine ideas (pref. not asian)

[MarinaS]

My office in downtown DC has monthly lunch meetings with ethnic cuisine, the last two were asian so I'd like to do something different. It needs to be delivered and be dependable. It is for a large variety of people, so nothing "too crazy" but exciting enough to draw a crowd (ie, Indian with your typical dishes went over well). Any ideas of places that would fit the bill? Maybe Latin American food? Open to any suggestions...