Well, it depends on the types of sports you like and also the location you are in. If you live in the UK, for example, and you have a Sky account, you can access Sky Sports channels through your ipad using their very own app. As mentioned above, Justin.tv has a great app with hundreds of channels to choose from, I use this for watching live darts mainly, but i'm sure you can find sports that you are into on there. ESPN also have a nice little app in the app store. It's just a case of trail and error. Also, as i think was mentioned, using the browser Skyfire, you may be able to stream online using specific websites, but you will have to look around for those.