Jussi Nikander wrote:

At 03.15 6.5.1997 -0400, you wrote:

1.  Ranma 1/2 and La Blue Girl
    
Ranma learns the true meaning of "Anything Goes Marital Arts" when he
must fight Miko Mido in a sexcraft match.  Can Ranma defend the honor of
his school without betraying his fiancees?

Hmmm...I think anyone actually doing this will become a hunted man. ^_^

4. Sailor Moon and Sailor Senshi Venus 5 

There's only room for one of them in the anime universe....

"There can be only one! MOON...TIARA...ACTION!" 

ROTFL!

5. Ranma 1/2 and Urusei Yatsura

Ranma-Chan finds herself in Tomobiki with amnesia and happens to run
into Ataru Moroboshi.  They soon become good friends and Ataru shows her
off to everyone as his new girlfriend.  Lum is not happy with this turn
of events and tries to punish him only to discover Ranma-Chan is a very
good fighter and very protective of her new boyfriend....       	

X_X

8. Project A-Ko and Ranma 1/2

A-Ko and Ranma-Chan team up to stop a hoard of rampaging robots, B-Ko
and Kodachi team up to achieve their ultimate revenge, and C-Ko and
Azuza team up to annoy the living hell out of people.  :)

I can see no reason why some degenerated individual couldn't write this. ;-)

Better yet, Project A-Ko and Sailor Moon, with C-Ko and Chibiusa teaming up!

How about:

Ronin Warriors and Samurai Pizza Cats
        Which would win, the Rage of Inferno or the Ginsu Sword?

Hyper Dolls and any Sentai show
        "Why bother summoning the giant robots?"

Rayearth and Legend of Lemnear
        Five words: Hikaru, Umi, Fuu, bikini armor.

AND SOME ANIME/WESTERN ONES:

Speed Racer and the Blues Brothers

Slam Dunk and Space Jam

Gundam and Roger Ramjet

Ninja Scroll and Teenage Mutant Ninja Turtles
        "Heroes in a half-scroll!"

Metal Fighter Miku and the WWF