Did a quick google search for the term "lists of videos". This link came up second: http://superl8tive.com/

Seems similar to what you're going for, and they appear to have been around for a while.

Checked their compete.com stats to get a rough idea on their traffic, and it doesn't look good. From 1600 uniques about a year ago down to 467 a couple months ago.

And their execution is not that bad.

So given their traffic, similar idea, and length of existence, it doesn't give much confidence that this idea can have a large audience.

Not raining on your parade. Just want to offer this little bit of research and my take on it. I think you may want to push the idea even further given the non-success of this similar execution.