I've had a couple over the years, but the one that really sticks out was the night my daughter was born. I slept on the little seat by the window, and my my wife was hooked up to one of those finger-clamp pulse monitors. Every time she would shfit in her sleep, the thing would stop reading her pulse and an alarm would go off.
In my dream, I was flying Scimitar, and I was tangling with a Krant. I remember wishing I could get an up-close look at him, but it was too difficult because we were moving so fast, and it was pretty dark. I'd occasionally catch a glimpse of the burnt orange armor and red markings.
Me and this furball were twisting and turning like crazy. I'd be on his tail, and he'd pull away harder than I could follow. I can remember hearing his snarling, and hearing him spitting curses at me in the Kilrathi tongue, and I'd taunt back at him with sweat dripping down my forhead and into my eyes.
Neither of us could keep the other in his sights long enough to make a solid kill. However, every time Staci's pulse alarm would go off, it would translate into a missile warning in my dream, and I'd pour on the afterburners and try to steer towards the incoming missile in the hopes it'd streak past and lose lock.
Finally, one of Staci's relatives called the hospital room to ask how the baby was doing, and I woke from my dream, gasping for air and drenched in sweat. Neither of us was able to gain victory over the other before the dream ended, and so I hope that, someday, I'll meet that furball in my dreams again, and finish what we started.
That's the only really vivid WC dream I've ever had, but it was quite a doozy.