Only Time, by Enya. It is on the album, "Day Without Rain."
Chandler proposed to Monica in Episode 25, Season 6: "The One with the Proposal, Part 2"
Season 7, Episode 23, The One with Chandler and Monica's Wedding. Ross has the "older brother" chat with Chandler and threatens to beat him up if Chandler makes Monica unhappy.
This was in season 8, episode 21, The One with the Cooking Class. Phoebe gives advice and preps Chandler for an interview.
Joey shows his Ichiban commercial to Chandler in the Season 10, Episode 6, The One with Ross's Grant. Joey tries to act in a commercial that Chandler's ad agency is doing. He shows Chandler a video of his commercials, starting with the Ichiban, lipstick for men, commercial he did in Japan.
Season 2 Episode 7 The One Where Ross Finds Out
Chandler proposed to Monica in Episode 25, Season 6: "The One with the Proposal, Part 2"
Season 7, Episode 23, The One with Chandler and Monica's Wedding. Ross has the "older brother" chat with Chandler and threatens to beat him up if Chandler makes Monica unhappy.
This was in season 8, episode 21, The One with the Cooking Class. Phoebe gives advice and preps Chandler for an interview.
There is one funny episode where chandler is having difficulty explaining to his boss that his "butt patting" is not appropriate. I'm not sure if this is the one your are asking about, but its a pretty funny episode.
Joey shows his Ichiban commercial to Chandler in the Season 10, Episode 6, The One with Ross's Grant. Joey tries to act in a commercial that Chandler's ad agency is doing. He shows Chandler a video of his commercials, starting with the Ichiban, lipstick for men, commercial he did in Japan.
Season 2 Episode 7 The One Where Ross Finds Out
Chandler asks about the fish in The One with Phoebe's Ex-Partner (season 3 episode 14)
The episode is called The One with All the Thanksgivings from season 5.
Season 9, Episode 19, The One With Rachel's Dream
A hilarious one
i think that i "The One with Rachel's Date"
The One With the Embryos