We've started collecting various recommendations for iPod / iTouch applications, and we've listed the apps by category in the spreadsheet below. To view the spreadsheet as a Google Doc, go to http://spreadsheets.google.com/ccc?key=0ApdSbsGfje1_dEMzdUtVRG1KNXNHa1dzTXpTU0NDUGc&hl=en
The tabs at the top separate the apps into categories, including "Reference," "Entertainment," and "Academic." Each page lists the name of the app, its generic function, more details on what it does, the cost, notes, and some similar programs. The spreadsheet was initialized in 2009.
If you have suggestions, please feel free to comment on this post, or email firstname.lastname@example.org.