Tarius, my Rogue1/Warlock5 had just come off a near death experience and was feeling a bit cocky (normally he was very much look out for number one) and decided to lead the party through a nearby door. Crossing a candle filled room, 5 Shadows jumped my bones... two crits and 3 more touch attacks later and I lost 14 Strength during the surprise round knocking me to 0 Strength and killing me instantly (Shadows kill with STR drain and turn you into a shadow). I turned into a shadow and one Searing Light later by the party and he was officially gone.
Well... now the DM uses him as an EVIL GHOST to haunt the party.
Wrong place, wrong time... normally my character would let the "other" rogue do the open doors crap... but he died a session earlier.