Oh, shit yeah.
Check out what it can make! (All images taken from that link.) For starters, RepRap parts, themselves made by a RepRap:
Who needs a new pair of shoes? Not Daddy, he's got a RepRap!
Oh no, my door handle busted! Why go to the store when I can make one in my home:
Dammit, I need an adapter to fit tab A into slot B - but nobody makes one! Except RepRap:
Man, all this sitting around making things from nothing like a god has made me thirsty! Time to get my drink on:
OK, yeah, enough. Look, this is pure awesome. I need one. Who's got half a grand sitting around for me to buy one? I'll mail you the first copy, double-promise! Or, even better, send me your parts!