Revealing mistake: Near the end when Randy is driving away with Harry you can see that the steering wheel doesn't move when Randy turns it.
Hotel Dick - S2-E3
Revealing mistake: Right at the beginning of the episode as the camera pans over to the doors of the movie theater you can see the actors playing the Solomons waiting for their cue to come bursting out of the doors as if they were running out of the theater.
Revealing mistake: In the scene with www.planetsolomon.com, you can see that it is a pre-filmed video (not a live stream as he said), as it has a time slider and play/pause controls etc. (00:13:05 - 00:13:45)
Suggested correction: During streaming, any video player can be used. Meaning "play" or "scroll" buttons are still visible, just not functional.
The color of non-functional buttons will be muted. You can see in the picture that the stop button is solid black, indicating that it is functional. The marker on the status bar is also partially advanced. In a live stream, the marker would remain at the beginning position unless someone paused the stream, in which case resuming play would cause the marker to advance in order to catch up to the delay. In this scene, Dr. Solomon is teaching his class and interacting with his students, meaning no-one paused the stream.
36! 24! 36! Dick! (1) - S3-E14
Revealing mistake: The mandolin that Dick is playing has no strings. (00:15:40)
Proud Dick - S2-E13
Revealing mistake: When Harry lands in the yard, you can tell he lands on a crash mat, as the grass beneath him shuffles. (00:01:15)
Episode I: the Baby Menace (3) - S5-E1
Revealing mistake: When Tommy is asking if everyone remembers which baby came from which incubator, you can see the baby he his holding in his left arm is just a doll. (00:09:10)
Dick's Big Giant Headache (2) - S4-E24
Revealing mistake: When Stone is about to drop the bowl of punch on Alissa from behind her, you can see she braces herself for it before he starts pouring it on her (she knows it's about to come when he says "Oops"). (00:13:05)
Revealing mistake: When Harry throws the tent against the ground, his left foot bumps against the large rock on the ground and the rock moves. (00:07:20)
Revealing mistake: Harry put his feet in a pot of warm chicken soup, yet at the end of that scene when they hug each other Harry lifts his feet up and you can see his socks are dry.
Mary Loves Scoochie (1) - S6-E17
Revealing mistake: The sword fight between Dick and the Black Knight was sped up in order to make their movements look more competent. Note the extras in the background moving unusually fast.