sorry to hear that dude. chalk it up as a learning experience for when that really kickass job comes up, you'll be able to ace the interview!
(i tell my younger friends to do this, just interview for whatever jobs just to get used to those interview jitters. so when a really good job comes around, they'll be all set for it. plus, if you happen to get an offer from one of those "practice" interviews, it ain't so bad 🙂 )