not used optical media in years, too unreliable. Hard Discs and RAID if you want to backup (or time machine if you a Apple fan
)
For displaying it on the TV, file server broadcast from the PC/Mac. Or Windows Media Centre if your a windows fan 
As tunnie says, Martin.
As i know you have a new Sony tv, im sure it can be networked. Install PS3 server on your pc, and as long as the pc is powerful enough to convert and stream the files, quality is pretty good on the tv
I've been using Magestic for OSX, its brilliant, yes its simple, but it does exactly what i want it to do. You point it to a folder(s), on Xbox, go Videos > Magestic, and those folders are listed. (as long as both Magestic & Xbox are on the same network)
It also plugs into itunes, so all the music is there too, photos can be done too.
Unless I am giving someone an app, program or video, i'll use dropbox, if its a large amount of data, think thats only time i would use Optical media.