Up there with "Burning Platform" would be "Problems are snakes. If you see a problem, don't hold a meeting, Kill the Snake" and "Our competitors don't have this problem as a central focus, it's like the chicken and pig at breakfast, we're the pig, the competitors are the chicken. The Pig is committed, the chicken is just involved", and, the one I've now heard no less than four times at four different companies - the story about the various people working on a church, and one character, sweeping his heart out, says that he's working for the glory of god (I.E. Do it because you love it, not because it's a job).
I never really got why dying to become someone else's food was supposed to inspire us - but I've heard it a couple times now.
Usually, after the meeting, a few of us would quietly point out that the pig was eaten, and they were asking us to sacrifice ourselves to the project, but that never seemed to discourage the metaphor from coming up, again and again.