$1 Oysters and $2 Grilled Cheese at Dante (Cambridge, MA)
Having graduated from a lowly paid graduate student to a still-lowly-paid postdoc, I'm always on the hunt for cheap food! Cambridge is not known for that, but you can still eat cheaply with a view of the Charles River to boot. How? Head to Dante at the Royal Sonesta hotel on Tuesday early evenings.
See, Dante serves $1 oysters everyday from 4-6pm. I went with a friend once and splurged on some Moon Shoal oysters. The oysters here are fresh and cleaned properly.