I don't know if there are any other better deals but this is pretty good for the people who don't have a 120 GB hard drive.
here's the link: http: http://www.amazon.com/Xbox-360-120GB-Hard-Drive/dp/B000OYKQBU/ref=sr_1_1?ie=UTF8&s=videogames&qid=1237918195&sr=1-1