Top 20 Rank: 6
Rank among: Delivery: 1When Hurricane Katrina hit in late August 2005, businesses became the heroes: FedEx delivered 440 tons of relief supplies, mostly at no charge. No wonder it ranked no. 2 on last year's list. This year, it slipped a bit to no. 6.
More: See how FedEx rates in 8 key areas.