Last night, The Simpsons celebrated its 20th season premiere tying Gunsmoke as the longest running series in TV history.  With a 10th Emmy win last week for “Outstanding Animated Program,” and the cast signed to a new four year deal, it seems there is no end in sight for the long running FOX show.  Four hundred and twenty episodes complete, and they haven’t aged a day!  To give some perspective as to how long the show has been on, this is how old the cast would be in real life:

• Homer 56
• Marge 54
• Bart 30
• Lisa 28
• Maggie 21

Picture Source: dan-dare.org