Once I watched "In My Africa" on YouTube before it aired in the US. On another day when I used the YouTube's search engine so I could re-watch "In My Africa," the video wasn't listed. I wanted to watch "Grandpa Dave's Memory Album" before it aired in the US, but I couldn't find it either. I first saw it on TV.
I watched several episodes from Seasons 14/15 in late 2010 that would not become available until 2011-2012. A user on Youtube streamed them from a website she made and we watched the episodes. That was good times. This was not even long after I joined the Arthur Wiki site. There was even a torrent available with all, but two Season 14/15 episodes. The torrent went down along with Megauploads (which is due to make a comeback very soon).