Paranoia Agent/Funny

• Kawazu impersonating not only the voices of Tsukiko's jealous coworkers, but their makeup.
• In episode 2 Ikari, fed up Tsukiko's vague answers, starts questioning Maromi. And then:

Tsukiko: Is he brain-damaged?
Ikari: (going beet red) Wha--!?
Tsukiko: I mean Mr. Kawazu.
Ikari: ...(in the stiffest tone imaginable) he's in...stable condition, thank you.
Maniwa: (choking back laughter)

• Arguably all of episode 5 ("The Holy Warrior"), especially because its wacky hijinks are completely out of tone with the preceding (and successive) episodes.
• Not to mention "Happy Family Planning", which manages to make suicide funny.
• Then there is the episode "Etc."; several of the stories told by the Gossipy Hens are hilarious.
• The climax of the rather dark fourth episode has Hirukama staggering around in a mixture of drunkeness and despair, sobbing for someone to stop him, which of course draws Lil' Slugger to strike him and skate away... until Hirukama suddenly gets to his feet and yells, causing "Lil' Slugger" to make quite a few amusing expressions before frantically skating away, only to be knocked out by a shoe (with an uncharacteristically humorous sound effect).