What Anime-Crossover Fight Would You Want to See?

[ZeeV2]

Kenshin vs Gutts (Gutts all the way :L)

[Flame-X]

I would like to see a bitch fight between:

Fllay Allster (Gundam SEED) vs. Nina Purpleton (Gundam 0083)

[Kaioshin Sama]

Domon Kashuu vs. Kenshiro (battle of epic loudness and communicating with fists)
Master Asia vs. Alberto The Impact (battle of OP old men and communicating with fists)
Kuroyukihime vs Asuna (battle of the most dangerous gamer girls)
Genesic Gaogaigar vs. Gurren Lagann (battle of improbably destructive mecha)
Sakura Ichiko vs the Luck Dragon from Never Ending Story (just cause)
Gon Freecs vs. Yuusuke Urameshi (battle of the Yoshihiro Togashi leads)
Kamille Bidan vs. Shu Ouma (battle of a man versus a boy)
Chirico Cuvie vs. Setsuna F Seiei (battle of ".....")
Holland Novak vs. Elena Peoples (battle of ace lifter vs. dumb otaku chick who can't pilot)
Balsa Yonsa vs, Futayo Honda (battle of the spear wielding masculine warrior women)

[FLCL]

Originally Posted by Kaioshin Sama

Kuroyukihime vs Asuna (battle of the most dangerous gamer girls)

The funny thing is their counterparts did fight

How about the following:

Guts vs Kirito (Black Swordsmen fight!!!!)
Max (Macross 7 era) vs. Yazan Gable (normal people fight!)
Kirico vs. Alleluyah (00. Super soldiers)
Simon vs. Shinji (movie version. Gurren Lagann vs Unit 1)