Best plugins

Hi l am new to this forum. I have just built a media center over the last few days. I have put in a tv card and have it up and working every thing is going well.

This pc will only be used as a media center for Radio, Dvds, Tv, etc.

What other plugins would you recommend. I have tryed to use Yougle but it did not work well.

Also what would you delet from Vista to free up more disk.

Thanks Cornishman