Temple of Ranma's Sailor Senshi Seifuku

Are there any good Tenchi/Non-anime crossovers? Prefrebly with sci-fi, like Star Trek and Battlestar Galacta.

Hmmm... Tenchi/Non Anime. I know of no direct Star Trek or Battlestar Galactica cross, but here is everything else:

Tenchi/Abbot and Costello fusion
TM-AC 'Who's on First Tenchi' by alighthawk - [Status=Single File] - [Last Dld=10/01/2004] - [Size=33kb]

• [Direct] http://www.fanfiction.net/s/666790/1/Wh ... rst_Tenchi

Tenchi/Hellraiser spamfic
TM-HELLRAISER 'Advent of the Cenobites' by PlatinumDragon - [Status=Single File] - [Last Dld=10/01/2004] - [Size=14kb]

• [Author1] http://www.fanfiction.net/u/14475/PlatinumDragon

Tenchi/Back Home Saga
TM-MULTI 'Back Home' by Warringer - [Status=Not Complete]

• [Direct] http://www.warringersworks.de/index.php?title=Back_Home
• [Author1] http://www.warringersworks.de/index.php?title=Main_Page

Tenchi/Transformers
TM-TRNS 'No Need for Robots in Disguise' by Battlemage - [Status=Single File] - [Last Dld=05/29/2002] - [Size=51kb]

• [Direct] http://www.tmffa.com/old/x/nnf-robots-disguise.txt

Tenchi/What Woman Want
TM-WWW 'What Women Want' by Lord_Augustus - [Status=Not Complete] - [Last Dld=01/28/2004] - [Size=75kb]

• No known valid link

I remember there being a Tenchi/Barney one, where Ryoko beats him up.

Only one other comes to mind, but it is meant as comedy, fuses Ranma/Tenchi/OMG/Star Trek/Star Wars:

R-MULTI 'The Goddess Dilemma' by Driver Jim Ohki - [Status=Not Complete] - [Last Dld=07/13/2007] - [Size=656kb]

• [Author1] http://www.fanfiction.net/u/130075/Jim_Ohki

A rewritten version of the above was released and updated late last year.