In recent days, there has been lots of commentary about why we mourn celebrities. In the case of the late, great Bernie Mac, the answer is obvious: he was funny. With his bug-eyed faces and his blunt, sometimes profane delivery, the Mac Man could make you laugh to tears.

That gift is celebrated in the documentary "I Ain't Scared Of You: A Tribute to Bernie Mac" (10 p.m. Sunday, Comedy Central). As you watch, Mac will make you laugh again, and his tribute might make you a little weepy too.