This post is going to be about hardware, rather than the software apps I've mentioned elsewhere. But, if you use an iPad, these two items are must haves.
The first is the Logitech Keyboard Case for the iPad. This works for iPad and the new iPad. This is fantastic if you are typing anything at length (including blog posts). It is a bluetooth device that is easily set up on your iPad, with a battery that is rechargeable. I got mine for $79 at Costco.
The second item is new and really exciting for those of us who love to watch a lot of movies using our iPads. It's from Seagate and is called the GoFlex Satellite. It's a wireless external hard drive to use with the iPad.
It doesn't allow you to save from the iPad (at least mine doesn't), but you can download from it to your iPad AND you can stream movies from it directly to your iPad.
It comes with an adapter to allow you to plug into your Mac to add whatever it is you want to store on it, and with 500GB of space, you can store a lot of stuff.
It operates off of WiFi, creating it's own little "network" from your iPad that allows you to stream to up to 5 devices simultaneously.
The downside to this is you cannot broadcast what you are streaming from it to a tv or projector (at least it's not worked for me), but you can download to your iPad the movie you want and then broadcast from your iPad using your video player.