ScaryIdeas.com is one of those sites you are bound to find using StumbleUpon or other social bookmarking sites: a collection of strange and somewhat interesting pictures and videos originally used in commercial or advertising campaigns, but which retain interest, humor or beauty beyond their original purpose, and thus get shown in the site.
The site does not focus on any particular category of advertising, and does not categorize it either, so if you are looking for graphic arts you might as well get stuck going over the packaging or branding sections and all that, but since the selection is so interesting, it’s really worth the while. The ads come from all around the world, and usually have a small caption briefly explaining what it is about, not in advertising terms, but just so that you can understand what product is being sold, which comes is especially handy for taglines in other languages. 
