Friends
From Tardis Wiki, the free Doctor Who reference
Friends was a television show in the 2000s. Emma Webster watched Friends in her flat. (PROSE: Almost Perfect)
VHS tapes of Friends were sold at a video store in Cardiff. (TV: Random Shoes)
Behind the scenes
Connections
Dan Castellaneta appeared in the season 2 episode The One After the Superbowl.
Jennifer Saunders and June Whitfield both made guest appearances in the two-part season 4 finale The One with Ross's Wedding, with the former also returning in the first season 5 episode The One After Ross Says Rachel.
Scott Adsit appeared in the season 7 episode The One with Ross and Monica's Cousin.