Visible crew/equipment: When Sean is showing Jay and Alex how to do something on the car, he is talking about him modding up his car for free. You can see a camera and crew through his reflector glasses.
Goin' Down the Road: Part 2 - S4-E22
Visible crew/equipment: The reflection of the cameraman can be seen in the vanity mirror as Spike and Caitlin hug, and again in the glass door, during Kevin Smith's hurried flight from Caitlin.
Visible crew/equipment: At Miles' party when Zoey and a random girl yell and say "Who's ready to have some fun tonight!?", you can see the set and other stuff visible on the top left of the screen. (Mostly visible on widescreen version). (00:07:25)