Back when I was pregnant w/my first child and we were told she was a boy after a scan, I'd decided on 'Jackson'. It's my maiden name, and would have been a way to name him after my dad w/out sticking the poor kid with 'Melvin', a name my dad has always hated!!!
For a girl....I quite like 'Ivy'. Not sure why...and I'm sure there would be jokes about 'Poison Ivy', but I've just always liked that name....