its episode 87
There is also another episode where Inuyasha gets drunk. In Inuyasha the final act Ep: 12 "Sango's Feelings, Miroku's Resolve"
That would be episode 86, at the very end.
In episode 42.
Episode 43 tetsusaiga breaks
I believe it was the episode when Koga gets introduced into the show.
She appears in Episode 68 (from Season 3), entitled "Shippo Gets an Angry Challenge."
There are few episodes when that happens ;) It's cuz he likes da girl. Anyone can see that. Lolsz
Episode 66 - Naraku's barrier, Kagura's decision .
Rin gets attacked in episode 35