I've flown the 737 for a few years now. The one thing I have noticed is that pilots tend to avoid the advice given in the FCTM as to how to land the aircraft. Boeing is very detailed in its advice; I'll let you look it up and it does work well. No floating and no crashing down, works every time. Yet many pilots seem to like to yank back, chop the thrust, then yank back some more. Thump it on, float it or grease depending on the day. With a slippery or contaminated, shortish runway the floater guarantees trouble.
There are lots of overrun accident reports you could look at. I'd suggest the Southwest Airlines Chicago Midway, Southwest Airlines Burbank and Eastern Airlines La Guardia reports may give food for thought.