What Hooked You on Your Ships?

Just curious to see what folks out there pinpoint as the episode or the moment or even the fic that hooked you on a particular pairing.  

Someone commented recently at ff.net about an ancient JAG story I wrote and it got me thinking about when I became a diehard Harm/Mac shipper - it was after reading a really great fic.  

So I was wondering what got everyone on the Booth/Brennan bandwagon.  Was it a particular ep?  For me it was watching the first episode the summer after Season 1.  Something about that ep, after I had watched bits and pieces during that first season, hooked me on the show and on the ship.  

For Harry Potter, I never cared at all about the relationships until I read the entries in the

dgficexchange

 

I was hooked on Jack/Elizabeth from the first ten minutes of the Pirates of the Carribean franchise.  

Anyway, enough of my ramblings.  I'm really curious to read other's responses.  Particularly about Booth/Brennan, but I'd love to hear about what turned on the light for other ships as well.