This actor played the murderer in Season 2 Episode 6 "A Stitch in Crime". He might have succeeded if he were more logical.
Leonard Nimoy
"You're no closer than the Babylonians with their swords and fire sticks."
Apocalypse
A small village; A famously indecisive man.
Hamlet
This actor, of wizarding fame, portrayed Al in his biopic.
Daniel Radcliffe
"We don't make mistakes, just happy little accidents."
Bob Ross
After being murdered in Season 3 Episode 1, "Lovely but Lethal", this actor ended up playing the President of the US for nearly a decade.
Martin Sheen
"Such heroic nonsense."
Megatron
A citrus fruit; A commonly spoken language.
Mandarin
"Amish Paradise" started beef with this chilly rapper.
Coolio
"And here we are, your moment of Zen."
Jon Stewart
In Season 3 Episode 7 "Swan Song", this man-in-black ended up behind bars instead of on the prison stage.
Johnny Cash
"Daisy, Daisy, give me your answer do."
(Daily Double!)
HAL9000
The peak of summer; Venerable or majestic.
August
"A Saga Begins" parodies the life of Anakin Skywalker; set to the tune of this national dessert.
American Pie
"Bang, Zoom, Straight to the Moon"
Ralph Kramden
This actor appeared first as the serious, professional boyfriend in Season 1 Episode 5 "Lady in Waiting". He reappeared in Season 5 Episode 3 "Identity Crisis" - this time as a victim.
Leslie Nielsen
"Someday? Someday my dream will come? One night you will wake up and discover it never happened."
Vincent
Bohemian
Weird Al loves to parody pop music, to be sure, but he also loves to create music in this spotty genre.
Polka
"And that's the way it is."
Walter Kronkite
This actor, who won an Academy-Award for his performance in Ed Wood, is the only guest star that played two different roles in the same Columbo episode - Season 2, Episode 8 "Murder Times Two"
Martin Landau
"You're an errand boy, sent by grocery clerks to collect a bill."
Colonel Kurtz
An artistic pattern; Relating to a particular prophet.
Mosaic
The first recorded live performance of "My Bologna" took place on the stage of this demented physician way back in 1979.
Dr. Demento
"Here's Johnny!"
(Daily Double!)
Ed McMahon