The only one I really bother with are the bbc, google maps and this tv guide.
I don't really do apple products much tbh, but this was a gift so it sits around on my coffee table doing little but providing a quick reference for what's on the box. I'll keep an eye here, maybe I'm missing out on the point of this thing...
If you have kids that are 4 or older, they'll love things like Talking Tom. Come to think of it, have not seen my iPad in weeks... It's amazing how kids cannot read or write but can use an iPad, clever bid of kit that is.
Agreed, star walk is pretty impressive, you have to use it to appreciate how innovative it really is. Edited to add, you put the iPad up to the sky and as you move around it displays the night sky you should be seeing, very impressive.
Air video is also good, it streams your media across your wifi home network so you can watch anything on your iPad that's on your pc, I think it was free too.
Wikipanion is a wiki client that's worth having.
Amazons kindle software, which is free, for reading digital books, well recommended.
I think everyone must have heard of shazam, more usefull on the iPhone, but it can recognize any music I've tried it with so far.
World clock if you need to know the time of day in multiple time zones/cities around the world.
Prey (called Prey Anti-theft on the app store) is pretty useful if it ever gets stolen- it locks the iPad, and displays a message announcing to all and sundry that it's been stolen, and to contact you. Also shows its location on a map. It's also free, and works for laptops and phones as well.
Have a look at 5-0 Radio - its a US Police/Fire Department scanner........... good for a laugh. Other than that, Kindle, Sky News, Sky+, Netflix, Met Office, IMDb, Metro. There are too many games to mention, but lately Ive been playing Breitling Air Races which is good.