I have filed for just 21,000 feet because the trip is short (about 350 nautical miles) and I want to keep the cabin warm. Dover approach step climbs us to 11,000 and turns us over to Washington Center. Washington Center becomes New York, which soon tires of us and we're shuffled off to Boston. I make my usual request for direct CREAM, direct LEB, but my heart's not in it. Even if I get it, I won't like it. This track will take us through some rough-looking thunderstorms on the Nexrad. In a thick Boston accent, I'm told to sit tight, go direct HTO, we see the weather too. Now I see the red moving rapidly west to east as the Nexrad page refreshes itself. A course directly to Rutland, Vermont, will take us through the western edge of red, but I'm guessing it will be gone by the time we get there. Timing. I am aware of how tight this airspace is. Jets from Europe are all lined up coming into Kennedy and Newark, and then there are the Boston and Manchester arrivals and departures. I'm not hopeful when I ask for direct RUT, direct KLEB, but I get it immediately. God love Boston Center.