If you were compiling a list of the world’s most innovative companies, which businesses would top your list? No one would be surprised if you picked Google, Apple or Amazon, but what about Wal-Mart? (Huh?) Or PG&E (a utility, for crying out loud)? Surely there must be some mistake! Or how ‘bout the Chinese data equipment maker Huawei (umm, who are they)? While a few of these companies might not have made it onto your top 10 list, all of them were featured in Fast Company’s 2010 ranking of innovation all-stars.