https://www.metv.com/stories/betty-lynn-remembered-her-first-time-playing-thelma-lou

Knotts would read Lynn his poetry.

According to Andy Griffith, he was not like Andy Taylor (https://www.metv.com/stories/andy-griffith-was-not-andy-taylor-according-to-the-actor)

"Don't pay any attention to that, that is a persona," said Griffith.

Don Knotts would make Andy Griffith laugh so hard he'd punch walls (https://www.metv.com/stories/don-knotts-would-make-andy-griffith-laugh-so-hard-hed-punch-walls)

Knotts had Griffith in stitches.

https://www.metv.com/stories/betty-lynn-remembered-her-first-time-playing-thelma-lou

Knotts would read Lynn his poetry.

According to Andy Griffith, he was not like Andy Taylor (https://www.metv.com/stories/andy-griffith-was-not-andy-taylor-according-to-the-actor)

"Don't pay any attention to that, that is a persona," said Griffith.

Don Knotts would make Andy Griffith laugh so hard he'd punch walls (https://www.metv.com/stories/don-knotts-would-make-andy-griffith-laugh-so-hard-hed-punch-walls)

Knotts had Griffith in stitches.

The episode where Barney was so shy, Andy and Ellie has to try to help get him up to speed.

Very similar to the episode where Gomer got in some trouble with Thema Lou.