AzumangaDaioh

...but no ecchiness... - *Kazuhiko tries to tie this to the four episodes he has just watched*  So...  lesbian crushes, contests on breast size and a completely perverted teacher who fantasizes in front of the class about making them play volleyball in bikinis...  are not ecchi?  Hmm...

I'm not trying to say it takes over the show (although the teacher really started to get on my nerves) but I think it's a little much to say no ecchiness :)

Hmm. It wasn't me who wrote that "no ecchiness" line, but I can certainly see what was meant by it.  I think I'd argue that all of the above are for comic purposes, and none aimed to titillate or be suggestive, by contrast with pretty much all that we'd consider ecchi normally.  The discussion about breast sizes is the kind of thing that teenage girls really do discuss (I know this, from a time when at 17 I was the only bloke present in a group of 8+ 17-ish girls having this kind of discussion... *shudders*).  The crush is done in a completely non-ecchi way, and is a running joke - again, the purpose is comedy.

The totally dodgy teacher I will admit is ecchi - the character, that is.  I'd still argue that including him in the anime isn't ecchi, because the girls, anime-makers, and audience, are laughing at him.  Of course, YMMV.  --AlexChurchill

• When the quiet, serious, but cat-loving girl Sakaki bends down to pet aforementioned cat, and discovers it to be a ToothyCat(though of not the usual kind...);
  
• When the 10-year old child prodigy, Chiyo Miyama, appears in an interlude, singing:
  

• When Chiyo and the dull-witted Osakan girl, Ayumu Kasaga (known universally as Osaka-san), both being physical underachievers in their class, get involved in a game of catch between each other, but fail to throw the ball without hitting their partner on the head;
  
• When Ayumu, so proud at having successfully separated her chopsticks, shows the lunch table her results, with a Vacuous Look and a dopey "Heeeeehhhh...", much to their chagrin.
  

Links

PaulPower was introduced simultaneously, and concurs.  Although he's still marvelling at the sheer bizarreness of the credits sequence.  And he wishes someone would find some good solid tranquilisers to inject into the hyper one who perpetually challenges everyone to random stuff (I can never remember their names, okay?  I go "Stoned one, hyper one, sensible one with glasses, mega-brainy kid, sporty one with a thing about cats, one with a crush on sporty one, sporty one's self-proclaimed rival, completely useless English teacher, relatively sane Gym teacher, perverted Classics teacher, and various random animals").