Spec me a linux?

[Colbaker]

Hi all,

Am looking for a good powerful version of linux (free) with suggested free software for the following tasks...

Media Center interface
Able to playback .mkv, .xvid/divx, Bluray content.
antivirus
video editing
dvd ripper/converter
Binaries downloader and unpacker (like grabit)

What do you guys suggest?

Oh and i am a Linux newbie.

 

[Colbaker]

this ati driver thing could be an issue as i am running an ati hd3450 hdmi card to my hd tv, is this going to be an issue?