I seriously don't get all the hate towards the Callum storyline? For some reason I can't help but enjoy the storyline, I guess I'm the only one.
I think I mentioned this on another thread, but I'll say it again. True, they could have made a better villain for Callum's character, but the fact that he thinks he is so threatening but actually isn't seems quite realistic. Most people with a hard-man act don't realize that they actually sound pathetic.
I don't think he is a villain with as many connections as that Jez Quigley, who was a bit more of a gangster. Callum isn't really intended to be anything more than just a low rate thug, and I think this fits in quite well with Kylie's past.