Scripted material in reality shows

It's quite clear no reality show is 100% "real" and that elements are scripted or staged to make things exciting. The problem is, what's being said sounds transparently fake. A few examples...

-I've found myself watching is "Pawn Stars" on History Channel. It's actually entertaining and informative, except when someone brings in a historic item, Rick (the co-owner) gives a long explanation that sounds like it's straight from Wikipedia. I have a hard time believing this guy is a walking library, and really just see the producers finding everything they can right before the camera starts rolling.

The other thing that annoys me about this show is at the very end, there's always a scene related to an item brought into the shop. In one episode, it was a classic Shelby Cobra, which they all took to the race track. The "Old Man" (Rick's father) insists on driving first to show everyone how it's done...except he doesn't get any higher than 25 MPH. Everytime I see these tag scenes, I think I'm watching an 80s sitcom and wait for someone to deliver that final punchline, prompting audience laughter, applause, and a "Sit, Ubu, sit...good dog!"

-One of the other shows I like is "Man vs. Food", although Adam Richman can be a little grating. One episode had him taking on a big pancake challenge, and a customer came up to him and said "If you finish that plate, we're gonna change the name to 'Man-cakes'!" No, just no.

I get that it's all for laughs, but it's very unnatural, forced, and a little insulting to the intelligence. It's the same reason I hate "Operation Repo"...if you want to exaggerate real events, fine. But don't have me believe some guy in a ninja costume confronted one of these guys, especially if you want to call your show "reality"...

I think on some level I'd prefer more of the fights than the muckety muck where there is something going wrong and it all works its self out by the end of the show and everyone is all lovey dovey.  Let's say for instance in the poor Sinbad reality show (I love Sinbad by the way, he is one of my favorite all time comedians).  When he moved in with his exwife.  At the beginning of the show the ex-wife was all mad about him bringing all of his junk to her house, and somehow, someway by the end of the show, they were all la de dah and everything's fine.  Now, I don't know about most people, but I hardly EVER am able to resolve all of my issues with my family in a week, sometimes not even in a month, but I can not see that they wouldn't have the issue of all of his junk figured out prior to him getting to her house.  I mean really...

As if scripting scenes wasn't enough...

I just read an article on Slate.com that they just found out after about a dozen years that House Hunters on HGTV is scripted.  I used to watch it all of the time.  They did a very good jobs because the people looking for a house sound about as dumb as a box of rocks and always want more house than they can buy.  Oh yeah, they always make a joke about the woman getting the closets.