If the DirecTV at every seat (no extra charge) and extra leg room (extra charge) were not enough, it turns out JetBlue has a great ticket change policy.
We had non-refundable tickets on JetBlue for today that we really wanted to move to an earlier time. Normally, on about any airline, that would be at least a $100 per ticket fee plus the difference in fair. The latter portion can be substantial, as the early rate we first received almost certainly is not available today.
But JetBlue has a special policy that on day of travel, you can change coach tickets for $50 each - that's it. No matter what the fair difference is. So I waited until 12:01 AM to call and change my flights. Totally awesome.