Game-Revolution has posted a rundown on the Xbox's launch titles in different categories. Naturally, Halo kicks off the Action category, and they liked the game a lot:

As a console first-person shooter, Halo's control has a slight learning curve, though it's negligible compared to other FPS's. Weapons are great and they each have a very distinct feel. The Alien Needler is the current office favorite, firing crystal shards that stick into an opponent only to explode moments after, causing spectacular collateral damage if used properly.

Halo is the Xbox's pride and joy. It's drenched in fun, laced with beauty and dipped in a vat of technological brilliance. If there's a shoo-in for launch, this is it.

They note that they didn't base their preview on final versions of the games, but it doesn't seem to matter much; there isn't much new information here, just more of the same almost unequivocal praise for the game-- including praise for the controls.