Parodied in Not Another Teen Movie, which has a the black character pop up with unrelated phrases like "bling bling!" (Yeah!?) out of nowhere, then disappear again.
Inverted/parodied in Amazon Women on the Moon, which features a parody commercial for a charity to help black people born without soul. Another commercial parody advertises an album by Don "No Soul" Simmons, a character played by David Alan Grier who's exactly what he sounds like.
Garth Marenghi's Darkplace pokes fun at the racism inherent in this trope via copious amounts of Stylistic Suck - one main character is (from the dialogue) clearly supposed to be written as one of these and even gets a rap verse in someone's song, but Garth Marenghi cast his own publisher in the role, apparently assuming that because he is black he'd be able to pull it off. The fact that he is extremely uncool in appearance, voice and mannerisms, and is easily the worst actor in the entire cast, significantly diminishes the effect.
Back in the '70s,"The Soulman" Rocky Johnson was the very embodiment of this trope. He passed along a generous quantity of his coolness to his son — a guy you might know as The Rock.
Drebin in Metal Gear Solid 4: Guns of the Patriots fits this trope to a T. Somewhat made weird though in that he still monologues to you just as much as anyone else, often with an insane level of detail.
Tony Umeda is the purest form of the trope in Bushido Blade II.
In the musical Passing Strange, there actually is a song named "Soul Brother", in which the young, middle-class Youth starts a punk rock band with his friends. They sing lines such as "My mother stands in doorways beggin' me to conform/Be a good, football playin' snazzy-dressing brother/so the sisters can be able/ to tell you to from the others" and "So Roots blew your MIND?! I learned that shit in third grade...in Ms Madeira's class".
Jazz and Blaster in the original The Transformers cartoon were the two Autobots most into Earth music and culture. Naturally, they both were voiced by black actors (trivia: in Jazz's case, by awesome character actor Scatman Crothers). In the IDW comic series, where the Autobots are shown using holographic avatars, that used by Jazz is, naturally, a black man.
Jazz fulfills the role in the 2007 movie once again, although the only thing left of the Jive Turkey is a more of a Mythology Gag. He introduces himself with a friendly "what's crackin', little bitches?" and a breakdancing move.
Frozone in The Incredibles. When he makes his first appearance in his street clothes when he enters the Parr family residence, "cool" is the first thing that comes to your mind, which is appropriate, given his ice powers. Being voiced by Samuel L. Jackson may have something to do with that. And he has 'Fro in his name. All together now: "Where is my super-suit?"
Spoofed with URL, the robot cop occasionally seen on Futurama along with his Fry-soundalike partner Smitty, who talks like one.