Don't use Megavideo. The majority of uploaders don't use show titles, therefore only showing a couple episodes or clips on the actual Megavideo site. This can be very misleading.
Use Indirect Websites. Best method to find all of your shows online. The follow sites have a database of shows to watch: Surfthechannel, ProjectfreeTV, Quicksilverscreen, Stagevu, and animeseason (for anime shows). There are only a couple big sites like these out there but usually only found through word of mouth.
Use the google method. In the google search enginge type in the show your are looking for plus megavideo. This method works well with the latest shows but not the best with older shows and episodes
If a show can't be found use an alternative method such as Hulu, NBC, or ABC to watch your TV shows or the alternative links on this article.