Oh, love this thread! Yes, I'm aware it's a zombie one but it's one that's relevant whenever it's posted - there's always someone, somewhere wanting to relive 80's and 90's telly and hear advice from those who lived it what was good and what was pap! 
Good in 1980's kids shows:
Bagpuss, Mr Benn, Bananaman, Batfink, Top Cat, Fraggle Rock, The Muppet Show, Muppet Babies, The Pink Windmill with Rod Hull, Emu and Grotbags, T-bag, Little Green Man, Simon and The Witch
General 80's shows:
Only Fools and And Horses
Bread
Birds of A Feather
Knight Rider
A Team
Airwolf
Dukes of Hazzard (yeeeee-ha!)
Fall Guy
1990's when in my teens:
Beverly Hills, 90210, Fresh Prince of Bel Air, Saved By The Bell, Sabrina The Teenage Witch, Quantum Leap (the latter you might have guessed I loved due to my username
)