Youtube channels with most video uploads

Recently when, out of curiosity, I tried to search for the youtube channel with most video uploads, I found websites listing youtube channels with most views, most subscribed, best, most inspiring, you name it - all except "most videos uploads".

So when I dug a little deeper and found a few channels that are possible contenders, I decided to post it for the benefit of those who just want to know who has posted the maximum number of videos on youtube, irrespective of views, subscriptions, awesomeness and so on.

Here are 6 channels I know, that have close to or more than 50,000 video uploads -


cardsforall [E-cards for all occasions] - 327,998 videos (as on Jan 7, 2012)
http://www.youtube.com/user/cardsforall

imagiers [Learn French] - 225,528 videos (as on Jan 7, 2012)
http://www.youtube.com/user/imagiers

Expert Village - 138,560 videos (as on Jan 7, 2012)
http://www.youtube.com/user/expertvillage

IGN - 75,389 videos (as on Jan 7, 2012)
http://www.youtube.com/user/IGNentertainment

Associated Press - 53,635 videos (as on Jan 7, 2012)
http://www.youtube.com/user/AssociatedPress

CBS - 51,098 videos (as on Jan 7, 2012)
http://www.youtube.com/user/CBS

If you are aware of other channels that have more than 50,000 videos, please let me know in the comments section.

(Updated on January 7, 2012)