Congratulations! Fantastic news!
Make sure that you see all the movies that you're interested in sometime in the next 18-21 weeks since you probably won't be seeing them until they come out on DVD.
We didn't peek either, but my wife was absolutely sure that it was a boy. We bought everything in gender neutral colors, which ended up being a gigantic pain in the ass.
And when you're ready to go into labor but haven't yet, you can "reward" your partner with the only scientifically proven way to induce without drugs. The exact same thing that got you into this "predicament" will get you out.
Good luck!