The New Collider

[Surgenator]

How will smashing table tops together prove anything, except that some people have too much time on their hands and others take things far too literally for comic effect?

Some examples of physics that can be done are in Alex's link. For example, Lorentz invariance, more commonly known as relativity, at higher energies. There are theories that predict that really high energy photons (light) travel slower because they interact with gravity more often.