However, double check whether you need a hard drive - fewer moving parts normally means fewer ways for things to go wrong, after all, and USB flash drives are available in GB+ sizes. A netbook, large enough capacity USB flash drive (large enough to back all the critical files in the netbook, that is), and USB DVD drive and you can keep the DVD drive in a padded case except when you are actually using it. I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.
I did not see pendrives of good capacity yet, maximum of 32 GB.
and you need more than 32 Gb for what reason? do you have to carry your entire film collection round with you everywhere? for almost any use 32 Gb is more than enough, and the USB stick is something that'll fit in a pocket so wont add to luggage weight, wont involve extra cables, dosnt have motors in to drain battery time, and for the price of a 32 Gb, you could instead get 3 16 Gb sticks, little less high tech, but does the job just as well. Any idiot can face a crisis - it's day to day living that wears you out.
seriously speaking i am very grateful to computer industry for minimizing everything because i am always on the move (I am planning to trek around Annapurna in Nepal the whole march).