Many people want to know if the iPad can stream video. The answer is yes and you can do so with Air video, which is a fantastic app that allows you to stream your videos from any PC or Mac to your iPad device. This app works over local network; over internet including 3G and supports almost all the video formats.
Air video comes packed with nifty features like video streaming, store the video in iPhone friendly format. The app costs 2.99 dollar. [link]