On rec.arts.books.tolkien, there is periodic debate whether the eagles could have flown the Ring into Mordor, saving Frodo and Sam the hazardous journey on foot. Here's an in-depth analysis on the *ahem* feasibility of such a plan.
Among the most elaborate fanfictions i have ever read, this story is a gapfiller that covers events between Frodo's fall at the ford and his waking in rivendell. Warning: some scenes are very graphic