Monkey Mentions...

• Episode #22 - What's My Line, Part 2: Willow and Oz. The coup at the zoo because of the monkey pants... - "I mock you with my monkey pants!"
• Episode #25 - Surprise: The monkey on the table in Buffy's dream - Willow: (to the monkey) "L'hippo a pique' ses pantalons."
• Episode #43 - The Wish: One of Cordelia's final wishes - "*And* that Willow wakes up tomorrow covered in monkey hair.
• Episode #49 - Consequences: When Wesley is phoning the watcher's council - "The code word? Monkey."
• Episode #82 - Out Of My Mind: Anya in the magic shop - "Who put the monkey heads near the Styx water? Do we *want* to pick exploded monkey out of our hair?"
• Episode #83 - No Place Like Home: Dawn's theory of where Buffy came from - "I tell you I have this theory? It goes where you're the one who's not my sister. 'Cause mom adopted you from a shoebox full of baby howler monkeys and never told you 'cause it could hurt your delicate baby feelings."
• Episode #88 - Into The Woods: Anya helping out Dawn in choosing which film to see - "We have to see the chimp playing hockey! That's hilarious! The ice is so slippery, and, and monkeys are all irrational. We have to see this."
• Episode #91 - Blood Ties: Dawn describing marshmallows to Ben - "When I was five, Buffy told me they were monkey brains"
• Episode #101 - Bargaining, Part 1: When discussing when they're going to do the spell to resurrect Buffy, Anya comments, "Um, Di-Discovery Channel has monkeys. And our tape machine's all wonky."
• Episode #104 - Flooded: While the nerd trio discuss what they can do, Andrew comments, "I had nothing to do with the devil dogs. I trained flying demon monkeys to attack the school play."
• Episode #111 - Gone: Along with a mention of "drunken monkey" fighting moves, there's another reference to Andrew's exploits at the school play.
• Episode #113 - Dead Things: Referring to Xander's dancing at The Bronze, Willow refers to it as "The Funky Monkey" which is then commented on by Xander and Tara.

Then you've also got Xander being everyone's "cuddle monkey" in Bewitched, Bothered and Bewildered, everyone's "butt-monkey" in Buffy vs Dracula and Spike describes him as "monkey boy" in Forever and later in the same episode Xander refers to Spike saying "The guy thinks he can put on a big show and con Buffy into being his sex monkey."... And there's also a Wizard Of Oz reference in The Pack when Buffy refers to them as "winged monkeys"... Plus in Wild At Heart, Xander comments about "Wild monkey love" when chatting to Willow...

There are also mentions in Angel...

• Episode #40 - Dead End: Lyndsey describes Angel's status - "Angel? - He's up, he's down. He's good, he's bad. He's a barrel of dead monkeys..."
• Episode #56 - Provider: As The Host is trying to translate for the Nahdrahs, "They either have to consult with their prince or go eat a cheese monkey."