The Old Man and the Key

When a beautiful new woman moves into his retirement home, Grampa Simpson is determined to win her love over the youthful owner of a minivan. After renewing his driver's license (which Patty quickly gave to him in return that he wouldn't wink at her again), Grampa convinces Homer to let him borrow the car to romance her. Although he impresses the new old gal, he crashes Homer’s car in a drag race, and thus loses his love to the competition.

When a younger man takes Grampa's new girl on a road trip, Grampa "kidnaps" Bart, taking him on the road to Branson, Missouri to win back the woman from the arms of the younger man. Ray Jay Johnson, Mr. T, Charo, Yakov Smirnoff, Charlie Callas, Bonnie Franklin and Adrian Zmed are the stars of the show in Branson they go to see. (Tennessee Ernie Ford is backstage, but crumbles to dust when Grampa proves he's dead by showing the deceased actor his obituary.) Grampa calls out to his lady from on-stage, but then accuses her of only using him for his car, thoroughly dumping her before reconciling with Homer.

[edit] Trivia

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This is the first episode Jon Vitti has written since season 7's “Home Sweet Homediddly-Dum-Doodily.”
Snake's girlfriend in this episode appears to be Gloria, who appeared in the 13th season episode “A Hunka Hunka Burns in Love.” Though she was originally voiced by Julia Louis-Dreyfus in that episode, here she goes unvoiced.
This episode was dedicated to the memory of Lawrence Tierney who appeared in "Marge Be Not Proud" as Don Brodka (the Try-N-Save detective who busted Bart for shoplifting Bonestorm).
Abe says the real man who died was named Stimpson.
When the family finds out that grandpa went to Branson, MO Lisa mentioned that is 1000 miles away from Springfield, if you do a research you can narrow the real location of Springfield to a few other states like: Springfield MA 1360 miles, Springfield OR 2025 miles, Springfield NJ 1185 miles, Springfield PA 1137 miles, or Springfield VT 1368 miles. The important thing is that for many years Kentucky was the place that everyone think as the home of the Simpsons but that cannot be because there is only 500 miles in between those two places.

[edit] Cultural references

The title is a pun of The Old Man and the Sea; like "The Old Man and the Lisa” (4F17) and “The Old Man and The "C" Student" (AABF16).
When Abe and Zelda take off on one of their dates, three old men with long beards imitate ZZ Top as a short part of “Sharp Dressed Man” is played.
The closing credits parody those of The Beverly Hillbillies. At the end, Lisa says in a Southern accent, “This has been a Gracie Films presentation,” which parodies the line at the end of The Beverly Hillbillies, “This has been a Filmways presentation.”
This episode pokes fun at the XFL. According to Marge, the XFL MVP was sweeping up toenails at the beauty parlor. Apparently, she breaks the news to Homer that there’s not going to be a new season. (In truth, Tommy Maddox, the lone XFL MVP, was playing quarterback for the Pittsburgh Steelers at the time of this episode.)
Additionally, Homer believes the "X" in XFL stands for "eXtreme". In actuality, the X never stood for anything, though this may be Homer's typical ignorance.
The drag race parodies a scene from Grease.
Grampa sings an altered version of “Old Time Love” by The Rivingtons to Zelda.
The music in the beginning of the concert is the third movement of Frederick Chopin's Piano Sonata No. 2 in B flat minor, Op. 35.
On the way to Branson MO, the Simpsons stop at the fictional town of Bronson, Missouri. In Bronson all the inhabitants look and sound like Charles Bronson.
When Homer asks if "Grampa" is Grandpa Munster, Marge answers, "No, Simpson!" This prompts Homer to stomp the ground like Herman Munster.