A DVR system is a digital video recorder that allows users to record television programs and store them on a hard drive. The most popular brand of DVR system is TIVO, which stands for 'Television Interactive Video and Online.' TIVO allows users to pause, rewind, and fast-forward live television, as well as record shows for later viewing. It also offers features such as the ability to search for shows by title, actor, or genre. Additionally, TIVO can be used to stream content from online services such as Netflix and Hulu.