For the last couple months, I've been following Chad Ochocinco's tweets (he's a wide receiver on the Cincinnati Bengals). Chad is known as a bit of a clown* but is a really hard worker and an excellent receiver. He's known for his inventive touchdown celebrations and desire to be loved by everybody. He's definitely succeeded in converting me as a fan.
Unlike Terrell Owens, a fellow clown who is a phenomenal talent but toxic in the locker room, Chad is liked by his team and loved by fans. Since joining Twitter several months ago, he's started to give back to his fans. For each of the home games, he flies one of his Twitter followers out to watch from the stands. Originally the idea was that they would tweet in his stead, but that didn't seem to happen.
He's also not afraid to announce his location (especially when he's at a mall, which is often). In fact, he'll often ask fans to give him a lift or meet him for dinner when he's out of town. When he's at home, he often offers to bring 100 fans to a movie (and they show up!).
You could argue (accurately) that's excellent at marketing himself, but after following along for a bit, I just think he's a good guy. He seems to hang with fans and work hard on he enjoys it. To me, it's a typical case of a perosn putting in hard work at something they love and having the success follow.
* See: his last name, which used to be Johnson, but is now officially his nickname, a poor Spanish translation of 85