Guess the movie from the TV shows

Correct!

Well done!

Laugh-In
Daniel Boone
B.J. and the Bear

Ernest Borgnine
Richard Jaeckel
Clint Walker

The Dirty Dozen

Dendarii Dame, you’re driving me crazy with this one. Hint?

AD and SNL have so many people, it’s hard to know where to start.

May I assume that either MTM or Carl Reiner was in this movie?

Here’s one that should be Easy Peasy Chucky Cheddary:

Combat
SNL, original cast
Chico and the Man
Valerie/Hogan Family
Third Rock form the Sun

Vic Morrow
Dan Aykroyd
Scatman Crothers (THIS time!)
Jeremy Licht (the only one I had to look up)
John Lithgow

Twilight Zone: The Movie

Bingo! Nice job.

Yippee ki yay!

Neither MTM nor Carl Reiner was in this movie, but you can add SCTV to the list. The movie is a cartoon.
And while I’m here…

Falcon Crest
The Streets of San Francisco
Bewitched

That helps! Curious George with Will Farrell and David Cross?

McMillan & Wife
Cheers
Star Trek: Deep Space Nine

Thanks for the hint! Gotta be Curious George, which featured the voices of Dick Van Dyke (Dick Van Dyke Show), Will Ferrell (***Saturday ***Night Live) and David Cross (Arrested Development).

Plus Eugene Levy of SCTV.

Mike Hammer
Sessions
Spenser for Hire

Yes! (and astorian is correct that Dick van Dyke and Eugene Levy are the third and fourth people.)

MASH: Henry Morgan
Bewitched: Dick York
The Misadventures of Sheriff Lobo: Claude Akins

Inherit the Wind

A fifth hint on this one:

MASH
The Dick van Dyke Show
The Naked Truth
Just Shoot Me
Laugh-in

Seinfeld
Monk
Saving Grace

Scrubs
Entourage
21 Jump Street

I’m trying to think of someone in Monk who was in O Brother Where Art Thou, but I think I’m barking up the wrong tree.

Sons of Anarchy
Arrested Development
Merlin