A request for grodog's Castle Greyhawk playtesting stories

I'm starting to work in earnest on the writing required to complete the levels from my version of Castle Greyhawk that have received the most playtesting over the past several years:  The Iounic Caverns, The Heretical Temple of Wee Jas, The Black Reservoir, Diamonds in the Rough, Escape from Level 14, etc. (and not necessarily in that order). 

To that end, if you've played in any of my games at Gary Con, North Texas RPG Con, KantCon, SoCal Mini Con, Lake Geneva Gaming Convention, on my semi-regular trips back to South Jersey, etc., I'd appreciate reminders from our games about things that still stand out in your memories. 

I have most of my lists of players from each session for playtesting credit, my monster HP scratch sheets, and my maps and encounter keys of course, but some encounters and events were certainly improvised during play, and it's those that I'm most-looking to try to freshen in my memory as I begin more-formal writing for the levels. 

Most of my maps are posted to my site @ http://www.greyhawkonline.com/grodog/gh_castle_grodog.html and I'll go through and tag the usual suspects from over the years too. 

I'm not just looking for good player stories either.  If you've played and not had as good a time as you would have liked, input on how I could improve the session is welcome as well! 

Thanks!

Allan.