I think the best one is probably Grabit or NZB matrix I think
jmp3up.com is the best site out there for that.
videomp3.com
NO. Best place for free downloads is the artists' websites.
hulu
http://hippomp3.com is great to download songs and youtube videos...
There are many - depending on what type of songs you intend to download. Few are in the related links section.
The best site that I know of is liltranscriber. Look it up on google, it is for piano music and it is so good! Its free and has fast downloads. Seriously, it is the best site ever!
Most mp3 file sharing sites. Bee mp3 is the best site for downloads.
www.mp3skull.com is.
www.watchmoviesonline.com
What sort of downloads?
www.ieatcheeseforaliving.com