Frasier: 10 Guests Stars You Forgot Were On The Show

10. Elvis Costello

Better known for his music, pub rock pioneer Elvis Costello starred in the Season 10 episode Farewell Nervosa.

Naturally, Costello plays a coffee shop musician named Ben. His rowdy folk songs and bumbling English charm was mismatched with Frasier's penchant for peaceful conversation. Costello was clearly toning down the talent dial a bit, as the Pump It Up singer put on a gawdy Cockney accent.

While Frasier felt compelled to leave the coffee shop, Niles is recruited as Ben's percussionist. Costello fans may also recognise the character was named after his original surname McManus, with the episode also focussing on Frasier's accountant Avery McManus' affair.

Costello has since also appeared in the sitcoms 30 Rock and Two and a Half Men.