group scenes are totally what make OTH, off the top of my head:
s6 finale OOPS jk they missed that...
s6 leyton wedding
s5 the club
s5 the failed wedding
s5 the bachelor/bachelorette parties kinda
s5 the library (not quite, but the females, so close)
s4 preprom party (BN sextape)
s3 the school shooting
s3 the sparkle classic, dancing on stage
s3 the halloween party @ tric
s2 dare night
maybe someone can come up with an official list of all scenes with the core5 together??
in general those are my fave eps.