Assuming I don't have a net connection ... I'd probably have to stick with openSUSE (DVD version) as the OS, laptop to use anywhere with applications ....
LFS - time to build an OS
BLFS - why stop at an OS

SuperGrub - so I can get the PC to boot after I break it!

an offline encyclopedia - anything except Encarta
Electronic version of Perrys chemical engineers handbook - how else would I build the fridge to cool the beer?
C64 emulator + a couple of games
freemind - I like mind mapping ideas (although a pencil & paper would be better)
Wolfenstein - version you can set up your own levels ... and change the characters to whoever put me on the island!
... fingal's first answer is probably the best
... bigtomrodney would need something to generate these ...
