It's more of the nostalgia and the classic type of rap he made that appeals to a lot of people. Of course his later hits have largely successful among the masses, but the Fresh Prince theme song, alone, is enough of a draw to make people want to see Will Smith and Jazzy Jeff perform. Plus, how often do they actually…

It's DJ Jazzy Jeff and the Fresh Prince, of course they're going to play stuff from their albums. Will Smith still has bigger hits, so you can count on hearing his "solo" stuff, although Jazz has produced on all his albums.

He's had a huge trailer for a while

Did you ever see the first 2 movies? Haha because Lawrence's character is married with a family, so no 22 year old for Martin haha

That sounds a lot better and more fitting than their attempt to crossover 21 Jump Street with Men in Black.

But this is the 3rd movie…lol.