Chewtobacca said:

I was thinking of fans who would invest the sort of time, skill and effort that Adywan and Darth Editous put into their productions, but yes some fan films do bring on a shudder. The Hunt for Gollum is really good.

I shall watch the other two you listed. I have not seen them.

Some other well made (non Star Wars) stuff by fans and amateurs that is worth taking a look at, are the fan trailer "Grayson" and the student film series on youtube "Italian Spiderman".