I think Orange's new ad provides quite a good description of ubuntu:
"I am my mum and my sister. I am my best friend Mike who I've known since school. I am Kate who's still somewhere in Thailand. I'm all the girls I've ever kissed, and the girls I will. I am the teacher that failed me, and the one who spurred me on. I am my bosses, and every one of my friends. I am a bloke I'll meet travelling, who'll teach me the guitar. I am the places I'll go to with mates, and the jokes I'll share with them. I am the people who put me down, and the ones who'll pick me up. I am who I am, because of everyone."