Tim Russ was in tonight’s NCIS.
Warren Stevens, Karen Steele, and Paul Comi in the Tony Curtis vehicle 40 Pounds of Trouble (1962).
Teri Garr as a struggling, neurotic actress in the Dustin Hoffman drag comedy Tootsie.
James Gregory as an NYPD cop on the beat in the 1948 murder mystery The Naked City.
Kate Woodville was also “Peggy” in “Hot Snow,” the first episode of The Avengers in 1961. (On my birthday, 7 January, as it turns out.)
In that episode (of which 13 minutes survive intact), she was the fiancée of Dr David Steele (Ian Hendry). Dr Steele teamed up with the mysterious John Steed (Patrick Macnee) to investigate her death after she was murdered by drug dealers. Hence the name of the series—it was her murder they were avenging.
It was apparently on the set of “Hot Snow” where Kate met Patrick. Interestingly, she was also killed in an episode of Mission: Impossible (“The Spy”) aired on 7 January 1968!
Just saw Peter Mark Richmond (“Ralph Offenhaus” in TNG’s “The Neutral Zone”) playing a small-town cop in the Twilight Zone episode “The Fear.”
Susan Oliver (“Vina”), Paul Comi (“Stiles”), Vic Perrin (Mostly voicework), and Byron Morrow (“Admiral Komack”) as Martians in the TZ episode “People Are Alike All Over.”
Rest in peace:
He was great as lovable bigot Lt Howard Hunter in Hill Street Blues: “Check that man’s immigration status!”
Also as the US Army paymaster in the “Captain Tuttle” episode of MASH: “You wouldn’t believe how many people try to stick it to Uncle Sam!”
RIP, James! 
I still quote Lt. Hunter’s “Judas Priest, Frank!” expression of disbelief/contempt from time to time.
John Fiedler (“Ripper-Possessed Mr Hengist”) is on right now in the “Security Arms” episode of The Odd Couple.
Just saw Frank Langella as a Soviet spy handler in a 2015 episode of The Americans.
Roger C Carmel (“Harry Mudd”) as a German general in Hogan’s Heroes’ “The Prisoner’s Prisoner.”
Warren Stevens, Michael Dunn, and Steve Ihnat in 1968’s Madigan. This is the kind of movie Naked Gun was parodying.
Just saw this guy in a recent episode of HBO’s Perry Mason, as an LA judge.
Last night I noticed Bruce McGill again as the no-nonsense county sheriff in My Cousin Vinny.
Tonight we saw the 1977 Disney animated movie The Rescuers, and heard John Fiedler provide the voice of an owl who was also a preacher.
I recently saw Robert Lansing as Horace Bixby, the grumpy, demanding riverboat pilot who trained the young Samuel Clemens in the 1980 PBS movie adaptation of Mark Twain’s Life on the Mississippi.
Even though I don’t think the show is actually very good and I didn’t watch the season as it aired, now that it is over I’ve been watching season 3 of The Sex Lives of College Girls. There was one instructor new to the season that was familiar that I eventually realized was the crusty engineer from ST:Discovery, Tig Notaro. (The SLoCG role hasn’t even been added to her Wikipedia page yet.)
(Bonus: another new instructor is Hetty from Ghosts.)
Shatner was in one of the better episodes of Route 66, Build Your Houses with Their Backs to the Sea.
Also, I got a DVD compilation of 4 westerns, one of which was Comanche Blanco, wherein Shatner plays two chacacters (I am not recommending it).
Nimoy was in an episode of Gunsmoke that aired a few months before Star Trek began airing. He played a native American who was a very Spock-like character (low-key, wily, confident).