I have used emule for years and its really a case of set it running and forget about it. You are unlikely to get files as quickly as with Kazaa, but there are a lot less fakes and there is also the bonus that you don't get corrupted files.
It mainly has older movies, although newer ones do pop up regularly. It is good for tv series and roms, and some software. It also has some more obscure stuff, like the whole of 'The Prisoner' series from the 1960's.
As it is configured, my 9 year old son regularly gets games and stuff, although you have to watch out for the pron :dry: