rip dvd audio to mp3, rip youtube to mp3, rip the whole internet to mp3, download miscellaneous samples on miscellaneous foreign websites (wade through exotic languages), walk around with my camera and sneaky record conversations of unknown people on the train or anywhere in public (once had a crazy one of an african ranting to his wife in african!! batiré me genge!!! - now: lost )
latest thing im gonna try is recording gameplay audio from videogames through audacity or sumtn, dunno if it'll work properly but i have some awesome shootemups with nice audio dialogues i'd like to see ripped.
i also recorded n64 audio once just through the rca out on the scart cable, should retry that sometime