One of the growth areas of the Internet is streaming video not least in the art world. There are sites covering exhibitions, gallery shows, artist interviews, art world events, etc. The quality of the output can be a bit variable and maybe dependant on the quality and speed of your broadband connection. Top of the pile is probably BBC iPlayer with Google Video at the other end, there are many in-between.
There are also sites either specialising in art video output or who include a significant content on their sites. One of the more interesting dedicated sites is NewArtTV others include VernisageTV, LXTV. The art magazines ArtReview and ArtInfo both have significant video content on their websites. The current streaming video phenomenon of the Internet, YouTube includes a number of dedicated art channels one of which is operated by the controversial character James Kalm. An exciting find was a YouTube channel under the name of deepsofnight which contains lots of goodies including Robert Hughes's Shock of the New.
The association between art and streaming video is only scratching the surface of the mediums potential, we are watching this space with interest.