The two best Apps in my opinion are:
1. TeamViewer - This is a completely free application that is a remote connection to your PC/Mac. The App does have a paid option which is an astonishing £79.99. Unbelievably there is no deference between the two Apps, there is no adverts or limitation with the free one, the company just ask you to pieces the paid option if you are using it for commercial use. If you are using it for private use then they are happy for you to use the free app.
2. TVCatchup - The second one isn't an App from the App store and it is only available to people who live in the United Kingdom. Just do a google search for this and go to the iPad site. Then 'Add To Home Screen' to create a shortcut. This App let's you watch all of the free view channels and informs you what is on each channel and how long it has been on for/how long it has got remaining.
In my opinion these Apps are definitely something of a nesecity for me, and I think that you should deffinitely check them out.