Nope, I can do this all day. Other fun examples of backformation off the top of my head are: "to burgle" from "burglar" (which the Brits still get mad about (note: this is incorrect, see conversation below)), originally from the Latin agent noun burglator from the verb burgare; and "cherry", backformed from Old French cerise, which was reinterpreted as a plural (even though it wasn't one), and then a new singular form was backformed. The same thing happened to "pea" (though that's a native English word) - you can still see the original "pease" in the old nursery rhyme: "Pease porridge hot, pease porridge cold, pease porridge in a pot nine days old".