Quote from Niles in Agents in America, Part III
[Doorbell rings] Bebe: I'll get it. Frasier: Oh, no, no, no, that's not necessary. [Bebe opens the door to Niles] Bebe: Good morning, Niles. What a lovely surprise. We were just about to sit down to a big family breakfast. Won't you join us? [Niles rings the doorbell again] Frasier: Come on in, Niles, it's all right.