Visible crew/equipment: When Joey is walking out to the pier to talk to Dawson, right after the wedding; the wind is blowing her dress back and you can see a prominent, solid line going up the front of her dress from about the waist up to the neck. I assume this is probably a microphone wire of some kind and not just a wrinkle, as the line is solid and protruding through the material.
Visible crew/equipment: When Joey is in Dawson's room, trying to tell him about her relationship with Pacey, she can't find the words and turns to leave. As she bends over to climb back out of his bedroom window, you can suddenly see a microphone wire protruding from the back of her white shirt. It's a visible vertical line, and as she continues to climb out the window, you can see that there is no mike pack on her lower back.
Visible crew/equipment: During Joey's surprise Birthday party in her dorm room, she and Dawson start arguing and everyone else suddenly leaves. Right after that, as Joey and Dawson are standing in the room arguing, you can see the shadow of another person on the wall just behind Joey, to the left. The shadow appears to be a boom operator, with a long-handled boom mic, and you can see him moving in and out of the shot by his shadow. Dawson and Joey aren't moving at this point, so neither of them could be causing the shadow. Also, there is equipment shown in shadow as well.
Visible crew/equipment: It's morning at Jen's and Grams'. Jen is seated at the kitchen table downstage/far left. Grams is upstage/right at the stove scrambling eggs. Grams crosses downstage to put the eggs in front of Jen and the mic overhead upstage/right peeks out just a tiny bit. Grams crosses back to the stove. Suddenly the microphone - including the rod the mic is on - just drops down almost completely into the frame over Grams' head and is not pulled back up.