This is a great resource that lists iPhone apps for education. Every app has a description so you know what every app does. No more need to download hundreds of apps to see what they do.
If you are tech savvy enough you could create an app to do this... and then say "there's an app for that".
http://www.scribd.com/doc/23745742/ICTAC-MEMO-iPhone-Apps-for-Education
Nice, this is really useful. I particularly like the possibility of evernote and teaching about proper citations.