Well you have two seasons of Clannad with 22 episodes each, with of course 2 OVAs each. Now each season provides about 14 episodes of backstory for the supporting cast so if you're looking for main plot-related material, you'll have to suck it up and wait. The backstories were definitely worth the watch, but there were a couple that seemed a little drawn out, but easily overlooked because the characters themselves were interesting to watch when interacting with others.

There was plenty of comedic scenes (especially with Sunohara, Kyou, Akio, Tomoyo, and/or Okazaki involved), but as you head into the second season, it gets depressing very quickly, with no hope of any real comedic relief.

I think KHR is a very enjoyable and interesting manga with loads of fanservice. I can suggest it to everyone for watching.

Overall:
An awesome Anime loosely based off mythology...
Probably for those who like the genre of
Action
Supernatural
Shounen
Harem(?)
Trivia:
-Note that this is based off the Eroge Tactical Game Tears to Tiara.The latest remake is on the PS3.
-There is a Manga version of Tears to Tiara.
-Arthur...Avalon..that's right,this is loosely based off the legend of King Arthur as well.
*Might be updated*
Update 2 : Finally,it ended.Fairly few episodes for something made out of a game though.

Overall:
It is a great anime I should say.Though probably not for those who prefer "fighting only" sort of things.Either way,there are two concepts of Justice and morality here so this is pretty much brain-melting if you think hard into it.However,most of the plot is dark and there is no humor content AT ALL.Well,unless you count L's personality into it or something.

Trivia:
-Note that this is adapted from the Manga so the Manga have much more content than the Anime version.So check out the Manga for the ENTIRE PLOT since the Anime is a fairly compressed version of the Manga.
-There is a film adapted for it,Death Note I and II and L changes the World.But this is even a much more compressed version :P But it's still pretty cool to watch.

Humor:
There...is humor content involved.But in the later part of the plot,the humor content is usually interfered by serious "stuff" the next second which kinda hampers the mood :P

Overall:
This Anime is quite enjoyable to be honest.The combat scenes might be some what short but their well drawn one way or the other. (I always get stuck at writing the Presentation since I written everything else in Story,Sound & Art T_T ) Either way,it's going to be troublesome to follow the entire plot of the series since...well read the Trivia section...

Trivia:
-Fate/Stay Night (Anime) was adapted from the Adult Visual Novel version which is being cut into several phases.The Anime version is a highly compressed version of the visual novel.HOWEVER.

Overall:
Well,there is a decent amount of juice for humor.But I disliked the fact that there is no hero dying.It's like the typical happily ever after in most plots.Either way,there are heaps of terms in the Anime so the idea is pretty good.But the final battle ends in a rather boring manner.It is fairly enjoyable one way or the other.However,there are hardly any plot twists.

Trivia:
-There is a Manga for this..well the Anime is based off the Manga anyway.I haven't seen it yet,however.
-There is a Drama CD set for it...
-There are games released for it on Wii,DS,PS2 and PSP so check 'em out if your interested.
-Typically enough,the themes are being sung by the main characters in a 2008 Album of some sort.
*End of Review,I would do a Fate/Stay Night review soon..

The first impression of watching this anime, I was like "Wao, this is so cool! Surfing is cool! Holland is cool! Damn!"

Eureka seveN is pretty cool. The concept of reffing is good. I really like watching how Holland and Renton handle their own LFOs performing tricks and evading attacks so skillfully just by using a single board. I bet Tarzan gliding through the branches must have come from surfing. The art department comes out pretty strong in overall, music comes second. Oh, and one more thing, the character designs are pretty deceiving if you realise that. I've always thought Moondoggie and Holland were cool people. And I was hugely surprised after seeing their real selves in Gekko-go.

Overall:
It is quite enjoyable. Amongst AIR,Clannad and Kanon,Kanon have the most humor content. However , there isn't any bonus content...which really annoys me. In the Visual Novel there are various Arcs ( Different progression of the storyline ) and I was fairly surprised that they didn't make special episodes for it. ( I was looking forward to a Mai & Nayuki episode :( ) Either way,KEY swung another tragic tale in our faces so brace yourselves :D But AIR was the most tragic so far.Clannad the least and Kanon is somewhere in the middle.

Trivia:
-Yeah I know you might be tired of hearing this but...There is a Visual Novel on this.One with Ecchi content and another without it.

Overall:
It can be seriously confusing at times and sometimes I have no idea what's going but I always managed to grasp the details back after some time and the summary of one of the episodes helped a bit. There isn't much humor content in the Anime,it's mainly tragic stuff to be honest.Either way,you'll be inhuman if you aren't at the verge of tears at least once.Either way, it's still based off a Fantasy setting so if you watched or played other KEY products you'll find yourself fitting well into this.However,personally,I find Clannad better by a weeny bit. (That's saying something since AIR only have about 20 episodes including the special episodes.)

Trivial Info:
-Again,this is based off a Visual Novel.Note that the earlier version have...

Review Presentation:
There isn't much humor in Season II but there is quite alot in Season I. (Mainly involving Sunohara)
And of course,if your favourite girl isn't being picked by Tomoyo in the end,have no fear!There is Episode 24 which is devoted for fans! (Basically,a special episode that features Tomoya being with another girl instead)
However,for Season II there is Episode 23 which shows how Kyou and Tomoya met and 25 which is a brief summary of what happened so far.
Again,for the fullest content and to pick the girl that you want,get the Visual Novel. (It ain't coming cheap however)

Side Note: Episode 24s are based off the Visual Novel Arcs.
Side Note: The Anime is better in a sense since all the girls gather together unlike the Visual Novel.