Mavs - I love Cuban.
He is getting more and more annoying, especially with his net neutrality comments.
My team would probably be the Mavs or Kings, though. Kings have Boogie and Bill Walton randomly announces their games a lot. I loved them in the early 2000s when I was in high school, that Webber/Bobby Jackson/Peja/Vlade Divac/Doug Christie line up was so fun to watch.
I am a Celtics fan first, but the NBA is not like other leagues. It's a lot easier to watch other teams and enjoy it compared to say the MLB. Fantasy makes it easier to watch random NFL games, but still, basketball is the best.