Friends
Twin Peaks
The X-Files
Buffy The Vampire Slayer
Charmed
Xena: Warrior Princess
Hercules: The Legendary Journeys
Dinosaurs
Daria
Beverly Hills, 90210
The Fresh Prince of Bel-Air
Freaks and Geeks
My So-Called Life
Sex and the City

You basically named the ones I wanted to mention ER was also great during its first seasons.

Friends
Moesha
Are You Afraid Of The Dark
The Secret World of Alex Mack
Sabrina The Teenage Witch
The Fresh Prince of Bel Air
Goosebumps
Sister Sister
Keenan & Kel
Smart Guy
Charmed
California Dreams
Saved By The Bell
Blossom
Martin
Home Improvement
USA High
Hang TIme

and off course Fifteen which birthed this iconic gif:

you mentioned some, but

Boy Meets World

and The Adventures of Sinbad

I forgot about BMW . I started watching Girl Meets World for the nostalgia and to see Cory and Topanga again but it's not the same.

The Fresh Prince of Bel-Air, Friends, and (90s) the Simpsons will always be my three favorites.

Most of what has been posted + The Outer Limits, Tales From The Crypt, Step by Step & The Nanny.

And Dawson's Creek.

Truly the golden era of TV, even if shows weren't as respected and subversive as now.

Moesha, Martin & Fresh Prince of Bel Air are the trinity

i loved Roswell

Friends
Buffy the Vampire Slayer
Charmed

Me too. Such a unique and exotic mood, especially during the 1st season. And that song!

X-Files, Ally McBeal, and Twin Peaks.

The OP basically posted everything I wanted to say.

Friends will always be one of my favorite shows!