Although you can always find current gripes, it is more fun to talk about past gripes because they are in the rear view mirror.
Let's see.
1. Had one supervisor that would go sleep in his car for the original 8 hours, then get out of his car and do his work starting at overtime. Then he'd clap his hands and tell everybody else "Come on. We gotta look alive here. Let's step it up." Then we'd hear from his superiors how great he was. I finally spoke up and said "maybe you should observe him all day without him knowing." He was let go shortly thereafter.
2. Right before the iphone came out, I set up a phone app that had GPS that allowed clock in and out for people that worked outside the office. We'd have management meetings every Tuesday at 10am. So I logged into the GPS tracking website at the beginning of the day and literally watched the main field supervisor sleep in his home (a map dot, not video) all morning until 9:45am. At this point, the dot started moving toward the office. He showed up late and claimed he had to get back out in the field. After the meeting, I checked to watch his GPS dot go right back to his home for the rest of the day.
3. A take off of #2. I reported #2 to the boss. Any time he couldn't contact this supervisor, the boss would run into my office and ask me to "bring up that GPS screen". My job was to create a dollar proposal for these projects. Well, the supervisor talked the boss into letting him personally deliver my proposal to the clients (instead of email/fax with phone follow up by me). We didn't get that project, but surprise, today this supervisor was at that project. Checked the other people under him, and they were also at the "not our project" project. We checked the time cards and not only did this guy steal the project for his own use, but he was using our people to do the project and bill the labor to us under a different project. And no surprise, that project showed little to no progress.
4. A take off of #3. Boss was fuming because this supervisor was his "golden boy". The boss was now in collect as much evidence to fire this guy immediately mode. He knew I understood just enough about networks to check out the supervisor's emails and local hard drive files from my computer. Remote logged in and broke the password in the following manner (no joke):
password .. nope
1234 ... nope
12345 ... nope
123456 ... I'm in
Looked at his emails and there he was. Bad mouthing the business and boss to every client. Found other incriminating files on his local hard drive. Ended with a joke to the boss "would you like me to create a generic shortcut on his desktop and rename it "kiddie porn"? Of course we didn't do that, but I had to throw in some humor because the boss was fuming. Prior, we had so many management meetings where everybody was warning the boss that something was wrong with this guy. And not just somebody that would steal work.
5. Continuation of #4. This supervisor douche was an idiot. Like I said, I had to prepare proposals for $3,000 to multi-million dollar projects. As such, I created a very large spreadsheet + database that interacted with our proprietary software based off FoxPro. I knew how to connect with it so I didn't have to re-input important data. I put a password on it because I didn't want to worry about people messing it up. In particular, the douchevisor. The password was a word he used all the time, but misspelled it every single time. So I could literally tell him the password to his face and he still couldn't get it.
6. Took a different job right out of school to raise money for further schooling. Made it clear that was my intent. A month before starting school, let my direct supervisor know I'd be leaving at a date a month from then. Reminded him at the official two week mark. Supervisor then told me "I don't have a replacement for you. Just work part time." I let him know the schooling was relatively far away, so it wasn't possible. I reminded him that this was the plan from day one and I was very open about it. Reminded him well before two weeks notice. And this was officially two weeks notice. Asked him how long I'd have to work part time before he could get a replacement (which should have been easy to replace). He said it would be until he said so. When he couldn't commit, I said "ok, then like I've been saying. This is my two weeks." I wasn't going to ruin my life path over a crap job. A few months later, ran into somebody from that job and they said "<supervisor> was telling everybody you just stopped showing up. Didn't give any notice." Luckily, I was so open about it that he actually got fired on the basis that everybody seemed to know but him. After school, I even came back and worked there in a higher position.
7. Like most people, I probably have an endless amount of funny work stories if I thought about it. So I'll stop here.