With DB and DBZ, Dragon Ball is what it is really called as the manga [Volumes 1-42, which is essentially from the dubbed series called "Dragon Ball" (Which was about young Goku) to "Dragon Ball Z" (what we all know starting from Raditz)]
I do agree about SSJ in the first movie, btw.
If the first is successful, then they will make it a franchise with 3 movies.
Besides, Dragon Ball may not be as popular as Star Wars, but I am sure that it has it's fans. I just don't expect this thing to make anywhere near the
Pirates numbers, but it's amazing what a good trailer and CGI can do. Sleeper hits are a wonder.