You guys will definitely be wanting one of these for BBUK8!! This is how I watch all my Survivor, TAR, ANTM, BBUSA, Hell's Kitchen, Biggest Loser (not to mention Lost, Heroes, Ugly Betty, Boston Legal, Scrubs, etc etc...!)
No need to convert the files, just drop them onto a CD (or preferably a DVD) as they are and watch away! I bought my first one expressly so I could watch BBUSA6!
My latest player even has an SD card slot so I just drag the files onto a 2GB SD card and off we go!
As for Space Cadets, sounded great - but the execution was pretty crap. I never actually figured out whether to believe that the guys who were supposedly in the space training camp really did believe they were there, or whether they were all actors (bad ones at that!)
Good UK reality shows... hmm, you could try Shipwrecked, that's not bad, although a lot of this year's contestants are quite annoying! We have a lot of 'American Idol' / 'Grease is the Word' type things over here, with amateurs or UK celebs singing and trying not to get voted out. I'd steer clear of these unless you really like that kind of thing!
Sadly Survivor UK never really caught on, although the 2 series that were made were pretty good. I also hear that Australian Celebrity Survivor is worth watching but I haven't seen it yet myself.
James