More than ever, teachers are using digital video to enhance their lessons. In fact, the number of schools using video streaming increased from 30 percent to 45 percent between 2004 and 2006, according to Market Data Retrieval. Why the popularity? For starters, video-streaming products are easy to use. They allow teachers to punctuate lessons with a visual and aural punch, both of which help students retain what they've learned. This article describes the different technology used by several schools for their video streaming solutions. Descriptions of each technology's pros, cons, costs, and streaming setups are presented.