Not just your computer or your hard drive, but any inanimate object? For instance, if I get my sister's car, my brother and I (who will be sharing it) will rename it the Jawnfinder (though I will call it the $h!tmobile at other times since it's such a crap looking car). Also, through a weird discussion with my father, my brother decided that if he ever runs over a pregnant nun, he will rename it The Hammer of God.
It doesn't have to be just cars, though; if you have a name for you house, or a specific room in your house, or a couch, or something, post it.
It doesn't have to be just cars, though; if you have a name for you house, or a specific room in your house, or a couch, or something, post it.