I totally agree. I feel he's an avatar for all teachers who'd love to just tell their students exactly what they think.
So many stories, so little time.

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actually Mr DeMartino's hair triggered temper is pretty funny

I think he had some great dialogue, and his outbursts are very similar to Jake, just more insulting. Jake is another character I love, so I like him.
Mr. DeMartino - (at Walmart type store, pushing cart filled with toilet paper) Hold out, Anthony. It's almost noon! You can do it!
Kevin - Mr. D! I thought you were at the barbecue! What are you doing here?
Mr. DeMartino - I'm sorry if my SHOPPING CART has CONFUSED you, Kevin! I'm here for the command performance of MADAME BUTTERFLY in the AUTOMOTIVE department!

His interactions with Brittany and Kevin talking to them like they were like 6 years old were some of the best in the entire run of the show.

are you kidding? he's downright hilarious. in a morbid, cringeworthy sort of way

I love when they are shopping at that huge store I think Pay Day it was called and he freaks out over cheese logs lol Sniff Sniff CHEESE LOGSSSSSS

He seems to be the Daria version of Mr. Buzz-Cut, while the other teacher is like Van Driessen, though a little less of a hippy.

I agree with some of the earlier sentiments. These teachers weren't necessarily meant be funny but instead ironic representations of the most obvious/exaggerated teacher personalities that color high school life. Mr. O'Neill wasn't funny either. I liked Mr. DeMartino I at least found him believable. Ms. Barch was funny but there were times the man-hating got a bit old.

Both fit in their ways.Characters like that do exist in society. I do find Mr.DeMartino funny but also sad. He doesn't make enough,students are indifferent .He can't hide his frustration.

Can't agree, I laugh at him every time his eye bulges out. Plus that time in "Is It Fall Yet?" Where he screams "AHHHHHHHHHHHHHHHH!!!! PEANUT BUTTER!" I always died laughing at that part .

Nope I can't agree.

This just in: humour is subjective.

Nah. She was funny. I laughed every time she came down on Kevin.
Let's be bad guys.

Because she was highly annoying, never funny and added nothing to the show.

It's that OTT bitter, divorced man-hating teacher who is hideous and shouldn't have been there.
Why shouldn't she be there?
Let's be bad guys.

I can deal with DiMartino. It's that OTT bitter, divorced man-hating teacher who is hideous and shouldn't have been there.

Mr DeMartino is in a way not meant to be funny. He is representing at the time an over stressed over worked teacher who doesn't get paid enough. Dealing with students who seem to be not interested in his lessons and yes he does reply to at least Kevin or Brittany in a sarcastic manner.
I think he is an interesting character as he is a Vietnam vet and he sometimes has flashbacks. He obviously doesn't have much money as seen in a few episodes. He is not allowed by the principal to eat any food provided at functions as he took any left overs home with him as he said he couldn't afford to eat.
Daria doesn't have to always be funny, it has many relatable themes.