The Untold Truth Of It's Always Sunny In Philadelphia

When Flash Flood Media caught up with Kaitlin Olson at Comic Con in 2009, they were happy she'd made it, and was cast- and bandage-free. She'd missed the previous year because of an injury, and it was one of the worst you can imagine: She broke her back.

While it didn't happen on set (a neighbor picked her up, held her over his head, and accidentally dropped her), she did keep filming through the pain. It happened during Season 4, so that included the scene where Dee gets waterboarded during "The Gang Solves the Gas Crisis." Olson told Elle she still went for it — she was really being waterboarded and she was doing it on her recently broken back.

That's just the start of the injury list, and most came because she does her own stunts. She probably pulled a stomach muscle dancing like the inflatable man (she was pregnant at the time), and that scene where Dee ran headfirst into a car door and dented it? She told Yahoo! that was all her — and she ended up visiting a chiropractor. The occasional accident on set has sent her to the emergency room, too. Hollywood.com reported she slipped and sliced her leg open to the bone while the gang filmed Lethal Weapon 6. They called 911, and paramedics were shocked when they showed up: She'd been wearing a blood pack when she fell, and was covered in it.