We eat dinner at the dining table together every night of the week (well, except Saturday when we usually eat out together...). I make homecooked meals, which both kids eat along with us. No short-order cooking here!
My DD is 4 and my DS is just about 1. So my 4 year old has to stay at the table with us until she's tried everything on her plate (but she doesn't have to clean her plate!). Then she talks with us for a few minutes before asking to be excused and thanking us for dinner. As she gets older, I hope the time she's able to spend at the table will increase, although I think she does very well for a 4 year old. My DS is just happy to be in the highchair at the table.
Growing up, we had EVERY meal at the dining table together as a family -- yep, breakfast, lunch and dinner! (Well, not lunch on weekdays...). The only exception was Sunday nights when we had a VERY special dinner while watching Star Trek together as a family. Yep, we were that geeky! Loved it!
Now at home, we don't even have a TV on the main floor (where the dining room, kitchen and living room are) so it's never been an option to watch while eating.