1. restore ALL my friends important files from his harddrive which loose its partition table because of MBR virus (with gpart)
2. compile many cool things, but the most successful story is when first time using linux i try to compile linux kernel and BUM! SUCCESS! (RTFM is the key)
3. configure some hardware like my modem, graphic, sound on my toshiba satellite 2805 and 2515
, external harddrive with USB to ATA, compile & configure NDIDIA driver for my GF4MX
4. and some little thing i forgot...