I sure do! lol. There are two that definitely stand out as negative in my career:
1) I was contacted by a photog to do a test shoot for a magazine submission. The style was swimwear along the lines of Victoria's Secret and Sports Illustrated Swimwear. After discussing the details, I flew down and met with the photog and we set off for the on location shoots. The entire time he asked me to do poses that were not a part of what we discussed (implied, shooting me topless but in a silhouette when the setting was not going to put me in any type of silhouette, taking off my top and putting my fingers over my nipples, doing the same tired 2-3 poses for every single outfit, etc...so not cool!). We argued the entire time. I was frustrated because I told him explicitly what I would and would not do BEFORE I agreed to do the shoot and each time he said, "I would never ask you to do anything that you don't want to do," he followed it up with, "Okay, now take off your top." I brought all my own swimwear and on one location he refused to shoot me unless I wore a swimsuit he had (which had been worn by just about every model he's shot--I know from looking at his port--and the swimsuit itself did NOT look like it had been cleaned recently...gross). It was a long, difficult and unproductive shoot. Plus, he had me wear wigs, which I felt took away from my face and overall look. In the end I ended up with images that I couldn't use for my port (except for one), nor did he ever bring up the notion that he submitted any of them to the publication he was talking about. I believe he misled me because we didn't shoot anything remotely related to Victoria's Secret and Sports Illustrated swimwear. A complete waste of my time and money.
2) I did a test shoot for an online motorcycle magazine, trying to break into import modeling and the main photographer, who turned out to be the owner of the magazine, was such a jerk. He didn't seem impressed by me at all and treated me like I wasn't that important (he wasn't the one who cast me but why invite me to shoot if you don't like me for whatever reason?). I told them before the shoot that I would not do lingerie or implied but did agree on a different outfit to replace the lingerie look. We did the shoot and I was supposed to get copies of the images but never heard back. About 1-2 months later I went on the website to see if the pictures had been put up and they had--totally unedited, raw images. They looked horrible. It was evident that he didn't know how to use his equipment because even with the lighting equipment he had, the pictures ended up looking like they were shot in the dark, and I guess my images weren't "sexy" enough because he ended up photoshopping my underwear out, making it look like I was doing an implied nude while sitting on a motorcycle. To this day I am fighting them to remove the images from their site. To add insult to injury, they have put the same altered photos on a paid/membership adult website that they run. I am currently building my case to take them to court. Hindsight is 20/20 but I can definitely say I will no longer attempt to pursue import modeling.
Aside from those two experiences, I can say that my modeling career has been filled with great photographers but it still sucks to be in any negative situation with less than stellar photographers.