I think the episode you're talking about is "Sex, Lies, and Ed's
Tape" - episode six of the first season. She's sitting in the
barber's chair getting a trim (when her hair was REALLY short) and
Joel is in there trying to be nice to her, saying her hairstyle is as
flattering on her as it was on Dorothy Hamill. It's the episode
where Joel finds a growth on Maggie's boyfriend, Rick, and he fears
he will fall victim to the O'Connell curse. Hope that helps you
out. Tom