We all know by now that Restaurant Week was extended an additional week through March 6, which is a great dining deal at many restaurants around the city. But Park Grill right next to Millennium Park has an even sweeter offer on Tuesdays (that's tonight for those of you who avoid looking at the calendar until Thursday or so). From 5 p.m. to close, enjoy a $22 three-course dinner. Choose from five appetizers, six entrees and three desserts, each more delectable than the last. They also have a $15 Power Lunch deal Monday through Friday from 11 a.m. to 4 p.m., complete with speedy service that will fortunately (or unfortunately, depending on how you feel about your job) get you back to your desk in no time. And if you have mini-mes running around, don't go the fast-food route again this weekend; kids eat for 99 cents with the purchase of an adult entrée all day on both Saturdays and Sundays. That sounds like a real Happy Meal to us.