I've had a firefish, and a blenny jump out. I also had a zebra goby chased out of the tank by a tomato clown. Found the clown on the top middle brace of the tank (still alive) put her back in and she died 3 days later (one side of her body, the side that was on the brace, was in really bad shape) found the goby on the floor the day after I found the clown and realized what happened.
Silly fish need to learn to stay in their tanks!