Mrs. rlh says don't post this because we always want it to be there, but I can't resist.
The homemade napoleon cake at Bazaar (Allston location) we have had twice now is amazing. So many flaky layers of buttery goodness, not too awfully sweet and with vanilla custard and cream between!
It is sold by the pound from a big sheet pan in the refrigerator by the deli ($5.99 per lb) - worth every penny and a return trip just for that item!
Bazaar On Cambridge St
424 Cambridge St, Allston, MA