Hi,
I'd like some good tools:
*gparted
*testdisk
*memtest
Can always be useful. As far as applications are concerned, I like mplayer if there is some place left (without gui, as it can alsways be installed later). You can use it as well to watch movies as to open a radio station url, any stream in fact, music files etc... just from console (for musical streams, do add '-playlist' option between the command and the argument).