Do you check the internet too see if a certain actor or actress from the show you are viewing is still alive and kicking or too see what other tv shows/movie appearances?

I was watching Burke's Law (YouTube)and checked up on Arlene Dahl and yes she is still alive(born Aug. 1925) and she is one of the last remaining from Hollywood's Golden Era.

Yeah, same for older movies from that era.

I don’t tend to watch very many shows from that era. The ones I do I have some idea of who is and isn’t still around. The only shows from that era I watch somewhat regularly are Batman and Star Trek.

I do. More to figure out where I know the actor from. There are so many great character actors.

Constantly. I am watching Law and Order SVU reruns right now, and I am always IMDBing the guest actors.

Same. And on that note, I was surprised to find out that Spock's "Bandmate" did a few skin flicks!

I've been watching 77 Sunset Strip and Amos Burke, Secret Agent the past couple weeks. Every day I'm looking up some of these gorgeous gals that appeared in the shows. I think her name is Jeannette Scott(?), british blonde from Crack in the World and Day of Triffids, didn't age well.
Another named Jane Wald (hot!) did a Batman and couple biker movies.
Also watching 12 O'clock High but the females are scarce but many big name guest stars.

LOL

When I am watching a TOS rerun, I often look up the hot blonde of the week that Kirk is romancing.

I don't know about the porn, but I remember a PSA she did about feline aids being the #1 killer of domestic cats

One of the women from "The Gamesters of Triskelion" ended up doing hardcore porn after she appeared on Star Trek.

Speaking of Trek. Was watching a 77 Sunset Strip and Grace Lee Whitney was in it. She was ditzy blonde girlfriend of gangster. Was driving me nuts trying to think of who she was. About half way through it hit me who she was. Then Shatner showed up on 12 O'clock High as bomber pilot with a death wish. Miss Landers from Leave It To Beaver showed up in Bronco episode.
I've got a 5 disc DVD changer hooked up in bedroom and been watching a lot of stuff I burned to dvd-r years ago and just now getting around to watching. The other night right after watching 77 Sunset Strip I watch an Alfred Hitchcock Hour and Edd "Kookie" Byrnes was in it as guy trying to escape prison work detail in coffin.

What I don't like about most streaming services now-a-days is they cut the closing credits before you can find out who co-starred in the tv shows and movies making it more difficult for some to ID the actors/actresses.

Um name???

Deborah Downey

She didn't do hardcore. Just got fully nude in a couple of films. The screenshots that you're likely to find of her are from Street of a Thousand Pleasures, which is THE definition of a skin flick!

Watched a couple more 77 Sunset Strip last night. Both had actresses that it was bugging me where I recognized them from. The first was Virginia Vincent. Half way through episode it hit me, she's the mom in Hills Have Eyes (1977).
The second was Pamela Austin. Had to look her up. She did a lot of tv and couple Elvis movies. What was ringing a bell in my mind was a Twilight Zone she did. "Number 12 Looks Just Like You". Where everybody gets a new beautiful/handsome body at age 19 and everybody looks the same. Richard Long was the male version, Pamela Austin the female.

Anything before 1970 I assume most if not all the cast will be gone.

Pretty much. The adults anyway. There's always some lingerers still alive.
Dick Van Dyke
Barbara Eden
Shatner and other crew members
Goldie Hawn and Lily Tomlin from Laugh-In
James Darrin
Peter Brown?
Lee Merriweather
Lebeau from Hogan's Heroes?
Ebb from Green Acres?
I think Jethro is still around
Marlo Thomas

Tom Lester "Eb" died last April
Peter Brown died in 2016
Robert Clary of Hogan's Heroes is still around
Max Baer "Jethro" is still alive.

Still alive:
Mission Impossible: Barbara Bain/Peter Lupus
Leave It to Beaver:Tony Dow/Jerry Mathers
Donna Reed Show;Paul and Pattie Peterson/Shelley Fabares
77 Sunset Strip:Connie Steevens
Partridge Family;Susan Dey/Shirley Jones
Gilligan's Island;Tina Louise
Get Smart:Barbara Feldon
Man From Uncle; David McCallum
Land of the Giants:Stefan Arngrim/Gary Conway(Burkes Law)/Heather Young
F Troop:Larry Storch
Petticoat Junction:Linda Kay Henning/Lori Saunders/Jeannine Riley
Time Tunnel:James Darren/Lee Merriweather
Munsters:Butch Patrick/Pat Priest
Lost In Space:Billy Mumy/Angela Cartwright/June Lockhart/Marta Kristen

Still alive:
Mission Impossible: Barbara Bain/Peter Lupus

Also Lynda Day George and Lesley Ann Warren.

I guess with actors once they've retired from acting you just assume they're dead.

Did Warren(season 5) and George(seasons 6 & 7) start after 1970?

Patridge Family barely made it in starting in 1969.

Shirley Jones is still around I think.
Most of the kid/teen actors should still be around.
Burt Ward? Never heard anything about him dying.
I think Thelma Lou from Andy Griffith is still around. I think.

There's quite a few around still if you look them up. Mostly in their 80s.

Michael Cole-Mod Squad
Mark Slade-High Chapparell
Roy Thinnes-Invaders
Nancy Kovack
Diane Baker
Sharon Farrell
Katherine Leigh Scott/Lara Parker/David Selby/Roger Davis-Dark Shadows

I remember looking up some of the women who appeared in the Three Stooge's episodes(or should I say short subjects) passed away shortly after their appearance.

I also remember reading something creepy about a woman you appeared when Shemp was an active member of the Stooges and she played an insurance scammer who was wheelchair bound and turns out later on in life she was wheelchair bound in real life.

I remember someone telling me that she get upset whenever she saw a dog or cat in movie or tv show older than ten years because that dog or cat is probably dead. Definitely dead if older than twenty years.