FUN and Famous Palindromes

Palindromes are words or phrases used in such a way that they read the same forwards and backwards. Common examples are: radar, kayak, civic, rotor, and noon but they start to become tricky with longer words or used in complete sentences.Some may not be that logical but fun nevertheless... Below are some of the cleverest selected from toptenz.net  arranged in descending order based on the number of letters:

Doc, Note: I Dissent. A Fast Never Prevents A Fatness. I Diet On Cod. (14 words, 52 letters)

from anthrophysique.com

A Santa Lived As a Devil At NASA (8 words, 25 letters)

from americards.com

Eva, Can I Stab Bats In A Cave? (8 words, 22 letters)

from comicvine.com

A Man, A Plan, A Canal-Panama! (8 words, 21 letters)

from northjerseymusic.com

Mr. Owl Ate My Metal Worm (6 words, 19 letters)

from shoutysongs.com