This article gives 23 good examples of bad font choices. For those of you in Allison's 501 (or 02?) class last semester- we did an exercise where she showed us pieces like this in class.
This article is called "A Few Good Fonts." The list looks like a good one, though I am still on a search for a list that tells me flat out what scenarios are appropriate for each font. (For example, a list of good body-text fonts, or headline fonts, etc.)
A list of (some) fonts organized by class, modern, typewriter and headline fonts.