In case you haven't noticed, Manhattan's winter Restaurant Week is fast approaching, and participating eateries are now accepting reservations for their prix fixe specials (three-course lunches for $24.07 and dinners for $35). The confusingly named "week" is actually 12 days long, running in two intervals from January 18th through the 23rd, then continuing from the 25th through the 30th. But whatever. The key here is to do a little research, because while the Restaurant Week prix fixe at, say, 21 Club isn't much cheaper than their usual $40 pre-theater dinner prix fixe, there are some sweet deals to be had.