I agree with regann. It depends a lot on fandom, POV, and context.
If you're writing a movie!Jack and Daniel fic, they're prolly going by last names. If it's series, they've moved on to a first name basis. If it's Sam's POV, she should be calling Jack by his rank (BECAUSE IT IS NOT TWU WUV I DON'T CARE WHAT TPTB THINK OMG ICK). In House, everyone calls each other by their last names. In Supernatural, it'd be really freaking confusing if you called them both Winchester.
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Date: 2007-09-18 02:31 am (UTC)If you're writing a movie!Jack and Daniel fic, they're prolly going by last names. If it's series, they've moved on to a first name basis. If it's Sam's POV, she should be calling Jack by his rank (BECAUSE IT IS NOT TWU WUV I DON'T CARE WHAT TPTB THINK OMG ICK). In House, everyone calls each other by their last names. In Supernatural, it'd be really freaking confusing if you called them both Winchester.