what shows had them?

The Simpsons - Summer of 4'2.

Not directly focused on the 4th, but a lot of it took place on it.

:lol: M*A*S*H had a 4th of July segment on the episode "A War for All Seasons" Father Mochahe was looking forward to have corn on the cob. But Igor creamed it. Quote:You creamed it, you Ninny!

It's not really themed episodes but I consider "Love, American Style" the ultimate 4th of July show.

I think "Saved by the Bell" had one. I think I remember an episode where they were on the beach with fireworks.

That '70s Show: "Sparkler dogs! God Bless America!"