it depends what genre you like. If you like shojo then:
Air
Cardcaptor Sakura
D.N.Angel
Fruits basket
Fullmoon wo Sagashite
Gakuen Alice
Kodomo no Omocha (Kodocha)
Marmalade Boy
Mermaid Melody
Ouran Highschool Host Club
Saiunkoku Monogatari
Tokyo Mew Mew
Shugo Chara
Special A
Aishiteruze Baby
**If you like Action/fantasy:**
Black Cat
Bleach
Death Note
Fullmetal Alchemist
Fullmetal Panic (Fumoffu, The second Raid)
Genorator Gawl
Getbackers
Hikaru no Go
Inuyasha
MAR
Naruto
Ruroni Kenshin
Trigun
Tsubasa Chronicles (somewhat in shojo too)
Utawarerumono
Vampire Knight
Wolf's Rain
Yu Yu Hakusho
good luck ^_^
EDIT:
Don't forget,
Elfen Lied (if you have a dark sence of humor you will laugh)
Girls Bravo (extreamly ecchi)
Dance In the vampire Bund (Great manga as well)
Demon King Diamao (Funny as H***)
Darker Than Black (Its just too awesome)
and MANY, MANY, MANY more
TAO
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Wolf's Rain is really good , as is Princess Mononoke .
well its really old but the animorphs are awsome and read the books i did and im addiced
Others are : Chi's Sweet Home, There she is!!
You can also try reading +Anima.
Shugo Chara
Shugo Chara Doki
Shugo Chara Party
Full Moon Wo Sagashite
Tokyo Mew Mew
Kamichama Karin
Yumeiro Patissiere
you can probably find some good PG anime on any anime channel
Okami
Skip Beat. It's really good, I recommend the manga.
I do not not exactly by what you mean by dirty anime, but I will try my best in answering your question. For really eechi and percerted anime, try this: Kanokon, KissxSis, School Days. For really messed up Anime, try: School Days (really messed up), Wlecome to the N.H.K. (Not that messed up). For a really gory, sad but romantic anime, try: Elfen Lied
Shinsekai yori, Beserk, Black Lagoon, and Steins Gate are all very serious anime, that do not have most of the elements that an average anime does.