This plugin allows you to animate cells within a repeating group. Beware though, there are some limitations with this, all clearly documented on the main post which outlines the instructions.
If you're thinking of using this, make sure you try it first, don't just buy it. Depending on the way you have your repeating groups setup, it may or may not work for you.

See the examples on the demo page.

There's a large range of animations to choose from and a section where you can supply your own animations directly from Animista.net.