How can we Filter all the rubbish?

I was just searching for "Best Ad Ever" in youtube to share with you. However, after looking at the top 10 search results sorted by relevance, I found none that was all that good, and in fact many were simply rubbish. Now that I think about it, every-time I go to youtube to search for funny or good content I waist so much time looking at pathetic UGC, with the hope to find something worth seeing. Youtube seems to work when one gets video recommendations from friends (usually through emails). I just found some widgets to share youtube videos with friends through facebook. Again, it would be nice to see which videos are most recommended by friends (a ranking perhaps)...