If you know the exact URL (www.youtube.com/watch...) you can use google as a cache. Type into the google search bar cache:www.youtube.com... That'll bring it up without accessing youtube.
Not sure if you can download them though... Looking into it. I'll check back. :D
You can try one of the links below. They're pretty new so they should work in most places, they work with facebook, myspace and youtube and have no download limits.
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Hi,i suggest you use a youtube downloader. you can this leawo free youtube downloader. it can download easily and quickly video from many video sharing sites like youtube,myspace,Dailymotion with speeding up function. http://search.yahoo.com/search;_ylt=A0oGkziRH6pKCJMAXIJXNyoA?fr2=sg-gac&sado=1&p=leawo%20youtube%20downloader&fr=yfp-t-701&pqstr=leawo%20youtube%20&gprid=vMDh9f_kRaiY5K8e5RSW8A&sac=1&sao=1 and after you download it you need to convert it to other formats such as wmv,mp3,mp4 etc according to your requirement. you can find it here ------------------------
For Windows: http://search.yahoo.com/search;_ylt=A0oGkxPCdUlK9mUB08RXNyoA?p=leawo+flv+converter&y=Search&fr=ytff1-tyc&fr2=sb-top&sao=0
For MAC: allhttp://search.yahoo.com/search;_ylt=A0oGklcpNoVK9QQBhhxXNyoA?p=leawo+mac+flv+converter&y=Search&fr=yfp-t-151&fr2=sb-top&sao=1all can be completed by several mouse clicks, just have a try.