Friday Night Fights, Noob Tube, and other shows in that list aren't things that you specifically upload vids to.
In MW3 and Elite (like Black Ops) there is a theater mode that records all of your games and then allows you to edit clips and save them. I believe in MW3 free Elite players will be able to upload 30 second HD clips and Elite Premium players will be able to upload 1 minute HD clips.
Noob Tube sounds like it will be a show kinda of like Tosh.O for MW3 videos. So they will look through the uploaded vids and pick out awesome, funny, interesting, random, etc videos and comment on them. Should be pretty interesting and hopefully funny.
Better information on this was given during the COD XP keynote. Look that up on Youtube and check it out. I forget what part it was in.