I think that Indy 4 will probaly end Indiana Jones on the screen forever. As much as i don't want it to, it probaly will. Because take a look at Harrison, he is already old and i think that this is probaly going to be his last time as Indy, unless he wants to continue. But also at first Lucas didn't want to do another Indiana Jones, but Steven Spielberg and Frank Marshall talked him into it! (im not sure about Frank Marshall, but i think it was him.) And after they talked about it Lucas loved the idea and now it is in the process of being made. But yea, i think Indiana 4 will be the last Indiana Jones for everyone. I mean Lucas, Speilberg, and Ford are all getting old, they even said that themselves! haha. So, i mean unless they do do a cartoon about Indiana (which would be freakin awesome), then this might be the last. With out Harrison Ford as Indiana then there isn't know Indiana, we know that and so does Lucas, Speilberg, and Ford. You can't replace a legend! What do you think?!?