I got an idea from wanting to upgrade my iMac hard drive from 1TB to 2TB. So I thought shouldn't the iMac optical drive be upgradable as well? I looked on eBay and there were a few Bluray internal drives for sale like this one http://cgi.ebay.com.au/Apple-iMac-2...-/180545578155?pt=PCC_Drives_Storage_Internal The only thing I'm sceptical from buying one is that (1) will the iMac require a driver or will it recognise the drive, and (2) will a standard programme like VLC be able to play BD media? Looks like a good idea to put the iMac's screen to good use. Sorry Apple I'm not going to be downloading HD movies. My internet is not uncapped.