Mr. Laser Beam wrote:
^ Actually, Jar-Jar did have a purpose. That was to be the final vote in the Republic Senate which authorized Palpatine to create the clone army. Jar-Jar, in all his innocence, had no idea he was being manipulated. That was the end purpose of the character.
Did you get the sense that this was always the plan, starting from TPM? I sure didn't. He was kind of presented as a moron in that movie.