Oh, I had one I'll never forget!
My dream was nothing but a set of numbers. Over and over and over again, I "saw" and "heard" the same numbers being repeated. And while I was seeing and hearing the numbers, I somehow knew -- I mean KNEW -- for certain exactly what they meant. It was 100% crystal clear to me that the numbers represented the day I would die: 12/16/24!
When I woke up from that dream, I was really shook up. I kept telling myself it was only a dream, the numbers were probably something I read or saw somewhere previously, etc. But I couldn't convince myself of any of that. The meaning was just too clear in my dream; I'll never be able to forget it. (FYI, it's been almost 15 years since I had the dream.)
So I can tell everyone not to worry about the Mayan calendar ending on December 21st, 2012. That will NOT be the end of the world -- at least not for everyone -- because I'm not leaving until December 16, 2024!
The worst part is, if I'm correct I won't be around to say I told you so!