I'm a BIG fan of Swype. Because of it, I'm strongly contemplating giving up a physical keyboard on my next phone.
Anyway... Swype announced a new version today and it's only initially available to owners of the Sprint Nexus S 4G. If you own one, I highly recommend you install it and try it out. There's a slight learning curve, but it's not very steep. In under two weeks of using Swype on an Epic, my wife decided she didn't need a keyboard and swapped her phone for an Evo.
You can get it from http://sprint.swype.com or you can check out the install guide video after the break.