216 Season 9, Episode 22 The One With the Donor
Disappointed to learn that they cannot conceive a baby naturally, Monica and Chandler mull their options. When Chandler brings home a handsome, unknowing co-worker, Zack (JOHN STAMOS - "Full House," "Thieves"), for dinner, Monica and Chandler embarrassingly "interview" him as a potential sperm donor. Meanwhile, while shopping with Phoebe, Rachel confides that she is enamored with Joey. Unfortunately, Joey's current girlfriend, Charlie (recurring guest star AISHA TYLER), overhears. And Phoebe encounters a boyfriend, David (recurring guest star HANK AZARIA), from long ago.