I adore Neelix, I do.
I didn't mind he was annoying. He was from "the street", so he didn't have proper manners or up bringing. Heck, he didn't even have water!! So I understood his jealousy and his over exuberance. He was lonely. Poor guy.
Still, I thought he was funny too.
I have a thing for quirky humor.
I kinda like Jar Jar too.
I also think the make up artists did a great job designing him.
I find him too be one of the coolest looking aliens in Trek too, if not the most detailed. He's not just latex ears or a forehead bump.