Halo Reach Beta spherical panoramas
HaLo2FrEeEk has whipped up a couple of jaw-dropping interactive panoramas using the Halo Reach Beta maps. Absolutely beautiful stuff here. There are two versions currently available - one for Sword Base, and a second for Boneyard. he even created screensavers for you guys! This is definitely worth a few minutes of your time.

I'm glad that this finally gets some attention. You may also check out his Panoramas of some of the Halo 3 maps.
Yeah, this is some awesome stuff!