I really like AutoComplete, it's such a great feature.  However every now an then I have a miss-spelling or something else that I'd rather not have in my autocomplete list.  It totally screws the down arrow once, tab, entire sequence.  This can be really frustrating sometimes.  Not frustrating enough however to totally clear the AutoComplete cache as that'd remove all my userIDs that I can never remeber, what a hassle that would be to have to dig up all those records.

Well, believe it or not, you can actually delete items from the AutoComplete list by selecting them and then hitting the delete key.  Yes, it's that simple.  It's so simple that most people don't even know that this was possible. Try it:  go to your favorite search engine, but the cursor in the search box and hit the down arrow, select one of the items in the autocomplete list and hit the delete key.....it's now gone.