Well, yeah, since he created Star Wars and is the owner of Lucasfilms that made the films possible
There won't be anymore made by George Lucas himself, because Disney bought the rights to Lucasfilm from him, so Disney is in charge of Star Wars now
The new Star Wars film being made by Disney won't be out until 2015, so there'll still be 6 films (7 if you count the pilot for the TV series Star Wars: The Clone Wars)
If you mean which Star Wars film made less at the box office, that would be The Empire Strikes Back.
4,211,594,022
episode 3 made nearly 850 million worldwide
4 was made first
star wars: a new hope was made in 1977.
Star Wars Episdoe 3: Revenge of the Sith
Assuming that the question is regarding the total box office figures for all theatrical runs of the first films of each series, the answer is Star Wars. Star Wars Episode IV: A New Hope - $775,398,007 Twilight - $384,998,808
No. No more Star Wars films are going to be made.
Star Wars: Knights of the Old Republic was made before Star Wars: The Old Republic.