Its theatrical, but its unusual:
I stage managed an event called 24-Hour Theatre when I was in college. For those unfamiliar with this, its the entire theatrical process, from pre-page to stage in 24 hours. Writers gather on Friday evening and receive some sort of prompt (there's a ton of different ways companies do it), and write through the night, then directors meet at 8:00 the next morning to receive their scripts, meet briefly with the playwright, then audition actors, cast and meet with designers over lunch, then rehearsals, load in, prop gathering, costuming, etc. happens from 1-6, dinner and cueing, then a tech/dress (two if time) and then performance at the same time you started the night before. It's an amazing event and tons of fun - but as the stage manager you generally are up for the entire 24 hours (actually longer, when you factor in all the prep work you have to do the day before and then load out). Think of the entire process you go through as a stage manager over the course of prep work, rehearsals, and performances, and cram that into 24 hours. It's crazy.
My other unusual event was a skating competition -- =about 6 months ago I produced and directed the opening ceremonies for the synchronized skating nationals held in my city. Along with putting the whole darn thing together -- coordinating practice schedules for 5 different teams located in 5 different cities around the stage of Michigan, securing the Mayor and other local celebrities to speak, costuming, finding and editing the music, putting togeter the program, etc...I couldn't even tell you all the little random things I had to do for it -- plus choreographing the production number, I ended up "stage managing" the actual ceremonies as well -- calling 15, 10, 5, places, light cues, getting the mayor to the ice for his welcome speech, etc. It was a great experience, and I don't think I could have done it without all my training and experience as a stage manager. I had 100 skaters participating, 4 speakers, the national anthem singer, and only 2 assistants. Thankfully it was held at the arena -- where I know all the IA crew who was working so they were extremely helpful to me!