Supermen on the Hollywood Walk of Fame ...

SADLY, the rest of my family petered out after only traversing a few blocks on the Hollywood Walk of Fame on August 10, 2016 ... I would have walked many more blocks.
Still, I was fortunate enough to see the George Reeves Star, as that late actor was the TV Superman I grew up with.
Also, they was at least one man dressed as Superman on Hollywood Boulevard, though he seemed to purposely turn every time I tried to take a quick photo of him. (He was hanging out with "Zorro.")
I have no doubt that Christopher Reeve and other "Supermen" have stars there too, but you'v got plan on a lot of walking and time if you want to see them all ....

The best Lois Lane actor?

I grew up with the 1950s "Adventures of Superman" George Reeves TV show.
Recently re-watching all of them again for the umpteenth time still yielded some new revelations.
The BEST Lois Lane for me is none other than  Phyllis Coates, who only starred in the first season of the series.

She was the most pretty and talented. No one, believe me, no one, could scream like her and she was impulsive and spirited.
Too bad, she had already made a commitment for another show, before the second season of Superman came along. (In addition, too bad she's only in ":black and white" in these early shows.)

-Also in one of those early 1952 episodes, it was the "Monkey Mystery" or the "Broken Statues," that is the only one where you see a Daily Planet Newsroom. 
Otherwise, it was always as if Perry, Lois, Jimmy and Clark were about the only employees in that large Daily Planet building/operation.

-In addition, I noticed so clearly a "Stunt double" for George Reeves in the "Mind Machine" episode that it was unbelievable. So, you've got to not look too close -- especially on those early episodes. At least they had great background music.