Hmm.. this is a hard one for me to comment on because some of the funniest scenes I've seen was only funny because I knew the characters, the "punchline" was only effective because of the previous pages, and also because it'd be funny out of the blue in a title that you would expect to be serious in its overall tone (ie. Sandman, especially concerning Delirium driving and Destruction and his dog...).
But I'll comment on the titles I believed to be the funniest that I've ever read, which was definitely Giffen's Justice League America and/or International and Justice League Europe back in the late 80's-early 90's. Keith Giffen made the Justice League into a dysfunctional superhero "family" and it worked extremely well - hilarious stuff.
Hmm... favourite and funniest scenes. I have lots of those, but let me list some of what i can remember and think of right now, in no particular order:
- Guy Gardner 'moon'-ing Batman in Identity Crisis (was it, i forgot )
- Hal Jordan punching Batman. FTW!!
- Robin, Wonder Girl (Cassie Sandsmark) and Kid Flash stole the Batmobile in Teen Titans v3 #12, or was it #13?
- Hal Jordan ressurection in Rebirth
- Superman telling Ion (Kyle Rayner) that it's not a wise decision to use his power to save everyone since he thinks that mankind shouldn't be depending their lives on superheroes (he's just jealous)
- Anything that happens in the 12 issues of Keith Giffen's JLA
- The bar scene in X-Factor #14. XD
Well, another character that keeps coming with new funny scenes is Deadpool. The Merc With The Mouth is full of bad jokes that makes you smile or even laugh. I think he's wasn't a living breathing non-stop bad jokes jukebox before he was in Weapon X. If he was that talkative before he was in Weapon X, then Copycat sure got some weird taste in men.
Ahhh yers. I've heard so much about Deadpool, and Genma-chwan kindly gave me a link to Deadpool downloads. I love him. XD He's hilarious.
And I love how he's one of those few characters who break the fourth wall. XD There was one panel where he was wondering if those little yellow thought boxes were still there, and he went on to say he missed those boxes.
Beh. My words don't do justice. *looks for the panel in Wiki*
"Did you say floss?"
Both Marvel and DC got their own funny shape-shifter. DC with Plastic Man and Marvel with Morph. And then they also got their serious stretching man, DC with Ralph Dibny and Marvel with Reed Richards.
I just remember another funny character. It's a work by Sergio Aragones, his name is Groo the Wanderer. He's sort of a parody of Conan the Barbarian. Though Groo is feared by many of his adversaries, both for his viciousness and his stupidity, i think Groo got a lot of funny scenes too.
I found some torrent files for Groo, here and here.