I actually prefer Bo for a girl. When I was pregnant with DS, DH had his heart set on Beau as a name for him (we didn't know what we were having until I was 34 weeks). Then I realised that his favourite show of all ime is the Dukes of Hazard (Beau and Luke Duke) . So that was out.

I dunno about having a formal name though. Our little guy is just Nate, not Nathaniel (DD couldn't say it so we figured 'what's the point?'), so I guess I'm more a fan of giving them the name I intend to use.