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Che is clearly a polarizing figure. It would be ignorant to dismiss the fact that he commissioned public executions in an attempt to instill fear into the general Cuban population.
Che's actions at times were horrendous, however, his dedication in acting for his beliefs were unmatched in the 20th century. His concept of true equality is something that we should all strive for, clearly not with public executions, nor with discussions and words, but with actions. The socioeconomic gap in America is larger than it's ever been, and while I would never suggest that Cuba is in a better place, acting benevolently for those who don't have a voice in society is something we can all learn from "El Che."
On an artistic note: The famous image of "Che," titled "Guerrillero Heroico" was named repeatedly as one of the most famous pictures in the world. This image is recognized by millions of people - and symbolizes Che Guevara not as the butcher, but as a man taking on the wealthy elite for the common man.

@LAQ 1013 and @finsbigfan - you're both right. Che was a murdering tyrant. However, his spirit of social equality is something that should be both celebrated and emulated in our actions.