Just kiss her already! Many Castle fans wanna see the show's main characters hook up.
Not to worry, Castle and Beckett are on the case! This is typically a bad thing for bad guys.

Castle Season 1 Episode 5 Quotes

By hand? That's like life before TiVo.

Castle:Until tomorrow detective Beckett.
Beckett:Can't you just say night?
Castle:I'm a writer night is boring... until tomorrow is more hopeful.
Beckett:ya well I'm a cop. night.