I don't know where you will find the details, but sometime back, 4-5 yrs ago, an IL-76 departed RAK in the UAE. He got airborne but only to a very low level and finally went off radar screens into the Gulf. It was reported in "Flight" and no doubt found in that year's annual accident survey.
Very common in that part of the world to load IL-76's by volume
I also recall reading about an Excalibur A.320 taxiing out at LGW looking more like a speedboat - had to come back to stand I think.
Can't remember whether bags in wrong hold or pax in wrong seats, but a serious C of G potential.
A common problem I used to note was when L.188's were either fitted with a front cargo door or a rear one and loaders tended to forget which one they were working in.
With the front end one, you had to keep shuffling the ULD's forward eveytime you took one off. I recall shouting pretty loudly when I felt one about to go
Hope this is of some help.
SS