The most wierd one i ever had was about one day after my father died, it was about him and me talking, mostly about his death and what i should do, he told me in the dream that he would only be there for one week, and after that he would be gone.
the most noticeable thing was that he told me to look for a brown suit case wich would hold some very important papers like insurances etc, at that time i didnt know shit about that suit case, but after "looting" his house we found a brown suit case with the papers we needed. That was hella wierd, i mean ive had fucked up dreams before, but never something like that, especially because its weird speaking with a lost one, and also because it came true what he told me in the dream.