Come to Boston, eat fish. In Cambridge, Legal Sea Foods is in Kendall Square. In Boston, seek out the Legal that's in Copley Place (near Barneys) because you can nearly always get seated.
Don't confuse it with the other Legal in the Prudential Center which is at the top of the escalator on Boylston Street (and packed all night). Copley Place is connected to the Prudential Mall and since there are two malls, there are two Legals.
Friday nights the bar is crowded. If you get a seat at the bar from 3-6 pm weekdays only, oysters are a buck instead of $2.50. We had five local varieties including Wellfleets, Cotuits, and Wiannos from the Cape, and Naked Cowboys from Long Island, of course. Other bar plates: tempura vegetables, clams casino, buffalo shrimp, lamb skewers (all $5).