People show up dressed/groomed improperly
Getting caught in a lie about something on a resume
Knowing nothing about the company/position being applied for
Asking if they can wait a few more days to take the drug test
Making racist/sexist/crude off hand comments
As far as bad interview experiences go, mine were pretty terrible. I interviewed at Creighton University and West Virginia University for pharmacy school. I had to reschedule both of them because of bad weather, so I ended up going to Omaha on the 28th of March, and to Morgantown, WV, on the 29th. I used Greyhound to go to Omaha, then back to Kansas City, took a plane from KC to Pittsburgh, and then another bus to Morgantown. When I was done with my interview there, I took a bus to Pittsburgh, and Greyhound to Missouri, where I live.
On the day before my interview at Creighton, I stayed up till 3:20 in the morning doing an assignment which had to be turned in the next day. I then hurriedly took a shower and went to the Greyhound station, since my bus was leaving at 4:15. I didn't shave. When I finally got to Creighton, I went to one of their bathrooms and shaved there. It was an open bathroom, and people were coming and going. I just told them, "Don't mind me," and they didn't. While shaving, I cut myself, and as I was putting on my shirt, the blood stained my collar, and I had to do my interview with a bloodstained white shirt.
I got to Pittsburgh at 11:00 in the morning, and discovered that there was no way to get to Morgantown except by a bus which came at 2:00pm. And my interview was set for 2:30! I called the school to let them know that I was stranded at the Pittsburgh airport (I don't have a license), and that I would be late. The bus came at 2:00 and did not get to Morgantown until 4:00. I didn't start my interview until 5:00 in the evening, and I did my interview in my travel clothes, which were a polo and jeans! I was the last person they interviewed on the last day of their pharmacy school interviews. I also ended up staying the night at Morgantown, and the assistant dean (who's an incredible person) helped me find a motel, took me there, bought me dinner, and took me to the bus station the next day. For breakfast, I had the doughnuts they served interviewees the previous day.
I did the Jefferson interview during my Spring Break. So, I went to Wilkes-Barre for my Spring Break and then left the next morning to go to Philly.
Left 3 hours prior to the interview, was making great time until we hit traffic entering Philadelphia, on the Penn Turnpike from I-80 until Philadelphia area, we were averaging 95 mph and 12 mpg fuel economy, so hit traffic in Philly, got lost, and finally made it to Jefferson 1/2 hour before the interview.
Couldn't find parking so my cousin went to find parking, however I forgot to take my bag out of the car that had extra transcripts, resumes, etc.
So I turn around, and there goes my cousin speeding away. I told him I should be done around 12:30PM, I guess he decided to go joyriding instead of parking and waiting, that and he didn't have his cell phone.
Went to the vending machine to buy a Sprite to wash down some Xanax, the stupid bottle exploded and I spilled Sprite all over the floor. So, then went upstairs to find the Pharmacy Department.
Nobody was there, so I kept walking around until 9:55. I start sweating because I'm wearing a wool jacket and its bloody 80 degrees in the building.
The interview went okay, but they still had no record of my Fall semester.