I didn't mind this episode, but it's probably my least favorite so far... I think a Jar Jar episode is good to slip in though, as long as this is more or less "it". He's definitely more tolerable as a cartoon and in this series/context, than he was in E1. It also sets him up as basically being a retard being taken care of by others... more or less.
I thought Padme was pretty slick in the episode, and I thought 3PO had the most "humor" to him. I did like Jar Jar calling him threeso though. That had me laughing some. I'm curious how the capture of Gunray plays into the whole storyline now as well.
It was a nice little stand-alone episode, but it's not near as good as Rookies, or the Yoda episode. Those were amazing and still had humor.
Oh and I liked the thing Jar Jar made friends with. I thought that was a funny little twist.