Coincidence? Or shared consciousness?

I overheard a conversation between some of my colleagues this morning, in which they were discussing George Clooney. It was nothing new: the same tired argument - the men were saying he is gay, the women were arguing. In my personal opinion the only reason men say this is that they are all horribly jealous of M. Clooney - and why wouldn't they be?!
But that is not the point here.

The point is the weirdness, and that is that this conversation pinged something in my head and I suddenly remembered that I dreamt about the man himself last night. Yep, George Clooney, large as life, was in my dreams. It wasn't one of those dreams either (unfortunately); it was far more realistic. I was in jeans and a T-shirt, he was in a group of people obviously pandering to his every need (secretaries, publicists and the like) but for some reason we started a conversation and he ignored all of them for a few minutes. It was then that I told him I'd always known we would meet each other, which he found very amusing. We got along really well, and then he had to go, which was a little sad but sure, I have a husband you know and I have no desire to be part of the whole Hollywood scene. Far too many fake people there for my liking!

Yeah, kind of boring, I know.
Makes you wish it WAS one of those dreams, doesn't it.

The thing is, though, it's not as if dear George is a regular topic of conversation in our office. Nor do I dream of him every night (more's the pity...!) So what's up with the timing?
It's like when you think of someone, out of the blue, who hasn't entered your mind in ages and then the next day you bump into them on the street. That happened to me a LOT, with one particular person, actually - the ex-boyfriend of one of my sisters. If it had happened once, OK I can put it down to coincidence. Twice, maybe. But we're talking about maybe up to 10 times, spanning a period of something silly like a decade.
(And then one day we moved into a new house only to discover a few months later that this guy was one of our neighbours!)

There comes a point where I have to start wondering: Is there such a thing as coincidence? Or is there something going on in our subconscious that creates these things. Some might even play the 'psychic' card.

I figured I would put my own theory in here, but when I tried I realised I don't have one. At least not one that is a fully formed idea.

So what do you think? Psychic? Shared consciousness? Or just plain coincidence..?