The red carpet can be a dangerous place.
You're trying to pose for a picture with your loved ones and your bandmates when... whoa! Look out! There's a leaping Benedict Cumberbatch flying into the frame!
Or perhaps you're giving a pre-awards show interview to Ryan Seacrest when... hey! Is that Jennifer Lawrence getting prepared to pounce?!?
Sometimes - heck, often times! - stars attack their own kind.
Which Oscar-winning actor might some consider the photobomb master? Which former President of the United States is not immune to a classic photobombing?
Above, we're giving readers a chance to click through 29 examples of celebrities taking other celebrities by surprise. Much to our delight!