I wasn't going to rec this one till I'd read it. I've read it; now
you go read it.

Btvs/SGC

Don Ho and the Born Again Virgin
by Muffie

http://www.tthfanfic.com/wholestory.php?no=17196#chapter1

Summary: Xander saves mini-Jack from his date, who's only after one
thing. Mini-Jack saves his date from Xander, since he's only after one
thing. Teal'c watches the arrest go down on Cops. So does the NID.