I was only intending to plug the TUC 60-second ad contest "Impact on the Cuts" (check here). You can vote on completed submissions. Some really great new stuff.
They also had a section on "Classic" video's such as this "famous" UNISON advert using the Polar bear and ants. There is some mixed reports on the reaction to this video. Some people were apparently put off since they don't like ants!
However, I think the majority of people who see this clip do "get it" and understand that acting (dare I say) in UNISON you have more power and influence at work than lone voices.