The 90's were my senior high & party years, so comics were touch and go for me but...
The Good:
Early 90's Legion of Super heroes
Robinson on Starman
Waid on the Flash
Dixon on Birds of Prey at the tail end
Mosaic (Can't vouch for it today)
The Arsenal mini series with Vandal Savage was fun
The Bad:
Turning my favourite Legionairre into a giant fur ball
The Ugly:
The Character Nihilism that went on to boost sales, or bring in younger versions of heroes. I'm sort of mellowing on the whole character replacement...too old to care, but Hal going insane, Ollie getting blown up in a helicopter, Batman Knightfall ect, pretty much just drove me away from comics.