Coffee. It was some Starbucks I got as a present. It actually tasted pretty substandard. But, hey, free coffee! Woo hoo!
The problem with Starbucks is that a lot of their coffee is grown using slaves, children, and forced laborers.
So if you don't agree with slavery and forced child-labor, Starbucks is not a moral way to go.
More information on Starbucks and slavery (something which people pretend
not to agree with, but their pocketbooks speak louder than the empty words) is here: http://www.organicconsumers.org/articles/article_22327.cfm
And this is a very comprehensive source which helps people who want to stop supporting slavery: http://www.free2work.org/
Along with the issue of actual slavery is the issue of unfair wages, or "wage slavery." That's pretty bad too.