Recently, Ghani and I started playing with fire, an all-in-one chat client. It's wonderful. It blends with the brushed metal theme (if you want,) has no ads, and an extremely user friendly, customizable Buddy list interface. (unlike iChat, which doesn't do the groups. I guess they assume iChat users don't have many friends.)
Plus, I can make it say "Ghanaye" when Ghani signs on.