Came across TeamSpeex last week. The program is a clean little Teamspeak client, and worked fine with both of the guild servers that I tried… once I updated to OS X 10.4 (Tiger)
Looks like the author is working towards an update for 10.3.x, which would be nice, because Dashboard makes baby Jesus cry.
Update: reading down through the comments from Savvy’’s blog shows that the non-Unicode version should work with OS X 10.3.9 (Panther)
Huzzah! Donation sent!