(CNN) - The image of the black nerd has changed.

Steve Urkel, the nerdy character on the popular sitcom "Family Matters", is not the only "blerd", or black nerd, in popular culture these days.

Author Eric Deggans and CNN's Carol Costello discuss how "blerds" have become cool, and now include comedian Donald Glover, rapper Kanye West, and musician Questlove.