The field of available text editors for the Mac has exploded in the past couple of years.  At one time, BBEdit was the only player in town, but those days have faded away.  While it still holds a large and devoted following, the many smaller text editors have chipped away little by little.  Among the larger players threatening BBEdit, are the collaborative SubEthaEdit, and more notedly, TextMate.

TextMate is developed by a single coder named Allan Odgaard who releases many small enhancements on a wonderfully regular basis.  His editor has a simple and elegant interface with muscles to spare under the hood.  You can use it as simply or robustly as you desire, and trust me when I tell you, there'll always be some other feature you haven't yet leveraged or discovered yet.

MacDevCenter has posted a lengthy interview with Allan.  Discussed are his development strategies, drive to keep things on the cutting edge, and more.  If you haven't tried TextMate yet, I'm sure hearing directly from the developer will help push you to give it a shot.