A mismatched pair of protagonists has to travel a long distance for an important reason. Friction abounds. Hijinks ensue. There’s an epiphany along the way. We’re not so different after all. It’s the plot for something like 852 different movies. “Soul Men” (2008) is one of those movies. Thankfully, Samuel L. Jackson and Bernie Mac are the protagonists and the backstory is interesting (estranged former Motown artists reunite) so the trip is relatively enjoyable. But like a lot of these movies, there’s hijink overkill and you get to the point where you’re like, “Geez, can they just get there already?”