First(ly) I appologise about the missing gerrunt in the title of this post. I didn't add it on purpose, to make a point, but no one will realise so I'll carry on.
iOS 5 is very good. No suprise there. Every time Apple upgrades its OS (either on its mobile devices or on Mac) it's a winner. I particularly like the quick use camera function and the iCloud photo streaming.
But this isn't an iOS piece, it's a 'I can't believe I've used an app that actually works in a very different way, but it still works very well' post.
Check out the LinkedIn app for iPhone. It is nothing like any other app I've used and it works really well.
Which is unusual.