Hot Date is this great Movable Type plugin that you can use to disable the seconds, and use a 12 hour clock (not that military time isn’t great, but some people don’t like thinking in 24 hours). You can also update the time of the post to the current time which helps immensely since sometimes you’re working on a post for a pretty long time.
You know.. the whole thought process thing. Other’s call it “writer’s block”. Whatever. In any case, the plugin comes in handy and supports MT3+ and MT4.