The National Climate Data Center's Climate Data Online feature hosts information from weather stations around the world. The U.S. Copyright Office lets users search for the copyright status of works for free, and the Internet Movie Database is the most popular resource for information about films.
Climate modeling is an active field of research, and study of the field depends on large data sets. The Climate Data Online website allows users to search for a number of measurements and other historical information, including record weather events. Users can also search for storm information and results from various climate models.
Another large database is the U.S. Copyright Office's copyright database. Because records prior to 1978 were stored in analog format, only information from 1978 adn later is available in a searchable format. However, the Internet archive hosts scans of work from 1977 and earlier.
The Internet Movie Database began in the 1990s as an effort to catalog movies, actors and other related information and has grown into the world's largest movie-related database. The website also hosts information on television programs, and it's a popular resource for actors and other people working in the television and film industry, thanks to its sections for biographies. As of October 2015, IMDb contains more than 100 million points of data and covers more than 2 million movies.