Kill it. Grill it. Flip it. Eat it.
Just FYI... I, too, had the DREadded Disc Read Error problem with my Halo: Reach that I purchased on launch day.
I exchanged the disk to no avail... After seeing this forum, I called into the XBOX Tech Support team. After about an hour and half of time I'll never get back, they set me up for a free warranty repair for my out of warranty launch XBOX 360 Pro/Premium (one that I also personally fixed the RROD...).
Once I shipped it off, the tracking info was sparse. In fact, I had to call into XBOX Support again to find out more info, which is when I learned that the Mesquite, TX facility had received my box, but it was just sitting on their dock. (Awesome, huh?) A day or two later, a replacement unit was shipped to me via UPS Ground.
The replacement unit is working fine, and they included a month's pass for XBL. I was secretly hoping they would include an HDMI port, too, but oh well... at least I can now play a game I bought on launch day, a month after I bought it.
Kill it. Grill it. Flip it. Eat it.
[Edited on 10.18.2010 11:45 AM PDT]