...I'd write a NGE/Haruhi Xover spamfic, but we're kinda short on Haruhi characters...
Haruhi => Asuka
Yuki => Rei
Mikuru => Shinji ("Mustn't run away, musn't run away...")
Kyon => Kaji ("She just got it into her mind that I'm an alien and... well...")
...and not sure about the other guy, dunno enough about him
Edit: Sorry, I must have edited this post a hundred times... Melange read one of the first versions :P