Please somebody help me! last night I watched a very good comedian on some HBO channel, but I forgot his name?

he was a black comedian
he had his head shaved

he was making jokes about tiger woods, about obama, about how he
thought that arizona law was racist, etc, etc...

he was a very good comediant... but i forgot his name, i would like to
know his name, to watch videos of him on youtube.

please help me!!

I already went to att webpage, and checked their tv listings, but
they don't have any tv listings of yestertay, they only have tv
listings of today and the following days.

thank you.