Dallas Mavericks' Dirk Nowitzki is introduced at American Airlines Center in Dallas Thursday. (AP) DALLAS: The face of the Dallas Mavericks laughed, sang and even seemed to tear up. For Dirk Nowitzki, the only thing that could come close to being an NBA champion for the first time was celebrating it with the fans in his adopted hometown of Dallas. An expected crowd of 250,000 crammed downtown Thursday for a parade in the team's honor, with another 20,000 or so filling the arena for a rally filled with emotional moments. After waiting 31 years for the franchise to be atop the NBA, fans honored it in a way that many said was worth the wait. Nowitzki was the unquestioned star of the show, drawing the loudest cheers from start to finish — usually chants of “M! V! P!” There were German flags in the crowd, a sign calling him “Der Kaiser,” and cut-out letters that spelled “Thank you Dirk.” After the parade and before the rally, Nowitzki and his teammates went to the balcony of the arena and spoke briefly to the crowd. Nowitzki capped it by leading a rousing rendition of their new favorite song, “We Are The Champions.” More singing came during the rally, when team owner Mark Cuban serenaded Nowitzki with “Happy Birthday”; he turns 33 Sunday. Nowitzki got into it, too, pretending to conduct. But this day had two other emotional crescendos for Nowitzki. The first came when coach Rick Carlisle said: “You're looking at the best basketball team on the planet.” The overhead jumbo board showed a close-up shot of Nowitzki wiping his eyes. When it was Nowitzki's turn to speak, his teammates and Cuban were among those standing and chanting “MVP.” Another highly charged moment came when it was Cuban's turn to speak. He couldn't.