Whoa: The last time I was in a Mug 'N Muffin, I could still watch Bobby Orr advertising BayBanks on the TV I'd picked up at Lechmere. But time moves more slowly in Norwood Center, apparently - they still have a Mug 'N Muffin (at 716 Washington St.).
Walk in and it's exactly as you remember them - a smallish, darkish place with wooden-beam ceilings (in this case, faux beams, in the sense that you can see how they aren't actually holding up the ceiling). In other words, sort of like you'd expect your grandma's kitchen to be if she lived in Vermont, right down to the decorations on the walls:
As for the food, it's basic breakfast fare, done right - assuming you like everything doused in butter, and who doesn't? Also inexpensive, even if you don't get there in time for the early-morning specials.
Oh yeah, and they serve their hot drinks in mugs:
UPDATE: We try the Town Square Diner.