Shootings: Dr. Harry (Empty Nest), Sam (Cheers), Will (Fresh Prince), Maxwell Smart & The Chief (Get Smart)

Broken Leg or Arm: Maxwell Smart (Get Smart), Fonzie (Happy Days)

Blindness: Fonzie (Happy Days)

Stabbings: The Governor (Benson)

allergic reaction: Antonio (Wings)

cuts that required stitches: Matthew (NewsRadio)

accident that resulted in severeing of arm: Dr. Romano (ER)

Heart Attack: Mr. James (NewsRadio)
Misc. Hospitalization: Bill after he licked his nicotine patch (NewsRadio)

Operation: Louie DePalma (Taxi)

Heart Attacks: Chet Hunter (Boy Meets World), Mr. James (NewsRadio)

Severe Cut: Matthew Brock (NewsRadio)

Woody had a broken arm or hand, I forget, on Cheers. It was broken in real life.

On AITF, Edith broke her foot in the hospital while being treated for someting else.

On Coach, Hayden Fox broke a few ribs.

On Family Ties, Steven Keaton had a heart attack.

John Boy on the Waltons where he was conked on the head by a board when the saw machine belt gave way

Caroline Ingalls on Little House On The Prairie where she cut herself on the leg

Richie on Happy Days when he was in a coma from a motorcycle accident

Add to these:

Archie Bunker(All In The Family)--Gallbladder Surgery
Dan Connor(Roseanne)--Heart Attack
J.J.(Good Times)--Shooting
George Jefferson(The Jeffersons)--Shooting
Mama(Mama's Family)--Conked In The Head With The Box of Jelly Jars

Winnie Cooper (The Wonder Years) - car accident

Carl Winslow (Family Matters) - gunshot (was in the hospital; Steve Urkel shared his room! Oh, and I forgot for what Steve was in the hospital.)

Also, in the Perfect Strangers episode in which Balki gets his driver's license, during the course of the exam, the instructor made Balki drive to the hospital on account of a heart attack (or whatever would allow you to "have more gas than Exxon"). IIRC his lunch acted up.

On Barney Miller Yemana had appendicitis.

One of the more classic emergencies on situation comedy television was the episode of Tonselitis that Cindy Brady had on the Brady Bunch. This episode had that certain savoir faire that made for Righteous Viewing Man. And the good Dr. got the adenoids while he was at it.

And the Brady Bunch or Brady Grid is:

Righteous.

Amen.

Uncle Phil (Fresh Prince) - heart attack
Carlton (Fresh Prince) - overdose of amphetamines

Fresh Prince of Bel-Air - Will (shooting)
Roseanne - Darlene (appendicitis (sp?), premature labor)
One Day at a Time - Ann Romano (heart attack)
Family Ties - Jennifer Keaton (Tonsilitis)
Who's The Boss? - Jonathan (broken arm (or was it two?)
Full House - Jesse (two broken arms)
Sisters (though not a sitcom) - Georgie (went into labor in her wrecked car)
The Facts of Life - Blair Warner (car accident)
Designing Women - Anthony Bouvier (accidental shooting)
Designing Women - Charlene Frasier (biopsy)
Home Improvement - Randy Taylor (cancer scare)
Saved By The Bell - Zack Morris (knee surgery)

Gunshot Wound: Robert Peterson (The Parent 'Hood)

Something with his ankle: Oscar Madison (The Odd Couple, he too shared a room with an annoying character. In this case it was his tidy roomate Felix)

Also:

The Waltons - Elizabeth Walton (slipped on a pile of logs, and they fell on her legs)

Home Improvement - Jill Taylor (I forget what, but she went to the hospital in what turned out to be the only two-part "To be continued ..." episode of the series.)

Originally posted by James
Home Improvement - Jill Taylor (I forget what, but she went to the hospital in what turned out to be the only two-part "To be continued ..." episode of the series.)

Oh yeah, I forgot that one. She had to have an emergency hysterectomy.