Pintlings
Here's a stop-motion UK TV spot for Tennent's Lager from Aardman Animations (the Wallace and Gromit people.) Evidently the script for Pintlings had been floating around Tennent's ad agency unused for a few years before it fell to Aardman because no one else was sure what to do with it exactly.
Read a great post about Pintlings' creation here, and watch the ad here.