The Starfleet costumes they tried to make look futuristic have dated really badly.
The forehead aliens themselves have all badly dated. That includes the Klingons. Forehead aliens just feel ridiculous nowadays, almost as bad as very human aliens you got in TOS (including the Klingons of course).
The sets, camera work and direction in TNG has a very 90's feel to them, much more so than a lot other 90's shows (I presume because a lot of it's studio bound).
The forehead aliens themselves have all badly dated. That includes the Klingons. Forehead aliens just feel ridiculous nowadays, almost as bad as very human aliens you got in TOS (including the Klingons of course).
The sets, camera work and direction in TNG has a very 90's feel to them, much more so than a lot other 90's shows (I presume because a lot of it's studio bound).