go to Boxtorrents or to KickAssAnime and just choose some completed anime there to download, any random anime will do great, and you probably want something completed, and not an anime with 4 episodes so far...

for action series, get Hunter X Hunter and Flame of Recca, along with Naruto, One piece and Kenshin, they are the elite of long running action animes... (don't know about the new action animes), and are fairly enjoyable.