Very sad. Stir Crazy and Young Frankenstein were my favorites as well.
He had a very natural way of being funny, and was blessed to have each role he played perfectly match his style of humor.
My favorite scene in Young Frankenstein is below.
Dr. Frankenstein: Love is the only thing that can save this poor creature, and I am going to convince him that he is loved even at the cost of my own life. No matter what you hear in there, no matter how cruelly I beg you, no matter how terribly I may scream, do not open this door or you will undo everything I have worked for. Do you understand? Do not open this door!
Inga: Yes, Doctor.
Igor: [sarcastically] Nice workin' with ya.
[Dr. Frankenstein enters the Monster's cell, accidentally bumping into a table. The Monster awakens, roaring with rage. Panicking, Dr. Frankenstein turns back to the door.]
Dr. Frankenstein: Let me out. Let me out of here. Get me the hell out of here. [Turns to the Monster, then back to the door] What's the matter with you people? I WAS JOKING! Don't you know a joke when you hear one? [Sarcastically] HA HA HA! [Begins pounding on the door; outside, Frau Blūcher stops Inga and Igor from trying to open the cell.] Jesus Christ, let me out of here! Open this goddamn door or I'll kick your rotten heads in! MOMMY!!!