PubMedCentral (PMC) celebrated its 10th Anniversary in 2010, and this commemorative video was posted by NCBI NLM in July 2011. Just 12 minutes long, and definitely worth viewing despite the time elapsed since the video was distributed. Establishing the open access archive was one of the most important developments in scientific communication in the past decade, and the video chronicles its rapid rise to prominence and influence on other repositories of scientific articles. In addition to its role as an archive, PMC leads directly to NCBI and PubMed databases, with links to protein or nucleotide data or citing articles beyond those in the PMC, among other options. See this 2009 article co-authored by biology professor Michael Moore and explore some of those linking options:
Rosid radiation and the rapid rise of angiosperm-dominated forests.
Proc Natl Acad Sci U S A. 2009 March 10; 106(10): 3853–3858.