Roz mentions that Bebe has helped her get three voice-over jobs. In real life, Peri Gilpin has done voice-overs for several animated TV series and well as TV commercials.
The woman at the table emptying a flask into her coffee cup apparently works at KACL, as Gil (Edward Hibbert) calls her Penny the Story Lady.
In the café, after Frasier tells the waitress "We're fine, thank you", the shot cuts to Niles. The woman at the table behind him is emptying a flask into her coffee cup. (around 16:20)
Bebe (Harriet Sansom Harris) mentions Dr. Clint Webber's (Billy Campbell) show, but that character is not introduced until several episodes later (The Perfect Guy (1998)).
The news reporter's name is Toffee McIntosh. This seems to be a play on Mackintosh's Toffee.