In this page I see a nice mouse-hover effect when you move the pointer over the different pledging reward options (to the right): https://www.kickstarter.com/projects/eofire/the-freedom-journal-accomplish-your-1-goal-in-100 and I am wondering if this is something one could do on an Unbounce landing page (Pricing table for instance?)
There are literally thousands of scripts available to achieve it. Here is a link that lists 250+ or so examples and instructions.
Let us know how it works out.
EDIT: Also, make sure you consider the implications for your mobile design as well since most of these rely on mouse events to trigger an action. Obviously, on mobile devices, you would have to rely on scroll/tap triggers.