There are many problems with Jar Jar Binks but Jar Jar is a good character. The writing in general for a lot of the dialogue is stupid in this movie (as I said can't remember two or three very well) and it is only the fact that Jar Jar has a very funny way of speaking that you notice it more with him.

There have been some really weird things that all of them have said but because Qui-Gon Jinn says it authoritatively it just sounds like the ramblings of a Jedi.

Take the scene where they save Jar Jar, why have him say "Better to die here then at the core" whilst he walks off with Jinn and Obi-Wan? That won't make kids laugh because kids won't understand what he really means (I'd rather die here then somewhere else) and even then just have him say something else if him talking is the big thing.