At university I applied to a grad scheme, got through the initial assments and had to do a "video interview" from home - this involves pre recorded questions popping up on your computer screen and you have to record your answers within 30 - 60 seconds. It went disasterously, it's so awkward talking to a blank computer, and as its all pre recorded you can't ask to reword the question or ask for time to think, just a horrible experience fair to say I didn't get the job.
Also had a few bad "group interviews" for summer jobs when I was still studying. I think the concept of them are stupid anyway, especially for minimum wage working part time in a shop type job. For those who don't know they get a bunch of applicants and ask them to do pointless team tasks like who can build objects (eg a tower or a bridge) out of the materials provided, usually sellotape and paper etc, followed by some sort of presentation on a product they sell.
Had one where there weren't enough applicants to split into even groups, so one of the employees / interviewers had to join one of the groups. He helped them to win all the tasks and obviously spent the whole time talking to them. Needless to say next time I went to that shop one of the guys from that group was working there.
I'm usually not too bad at face to face interviews, although for my first graduate interview I was quite nervous and tried to over compensate for it - they asked how well do I know the finance industry and I said 8 out of 10, next question who is the governor of the Bank of England.. No idea and I didn't get the job.. That one was my own fault but 2 weeks later got another interview for where I'm working now.
I think when I look at those interviews, deep down I know I either wasn't right for it, or never really 100% wanted the job anyway, and so far things are going alright for me as I had to wait and got something that suited me better. I'm sure the same will be for you to be honest