You might have to leave the competition proper, to get involved in this thread - you have to post the youtube link.
Here's a few to get you started.
From the 00s
From the 90s (and you thought you'd put this out of your mind forever...)
But the 90s also gave us this real gem
The 80s (oh where oh where to start?)
I DARE you not to have an 'OMG moment' with this one...
I loved this one as a kid...great video
The 70s - of course!
and the 60s (this was one of the first songs I learned as a kid...
)
Portal