Visible crew/equipment: In the scene where Dylan visits Haley at home, when Claire grabs Dylan as he's going up the stairs you can see a member of the crew (probably the man holding the mic) in the mirror in the background behind Claire. (00:10:40)
The Incident - S1-E4
Visible crew/equipment: At the start of the episode, Hayley and Luke begin fighting on the couch, and Hayley's filming equipment becomes visible. (01:14:00)
Visible crew/equipment: While Phil and Claire are warming up for their race, Alex and Luke are getting dropped off. When you see them walking towards Phil and Claire you can see a crew member with equipment behind the bushes at the right side of the screen. (00:17:05)
Visible crew/equipment: When Haley walks into the kitchen she tells Dylan they're over and hangs up on him. Then when Haley's cell rings, as the camera quickly pans around, the pink T-mark becomes visible on the floor behind Haley. (00:04:35)
Visible crew/equipment: When Cameron and Mitchell pull up to the driveway we can see what looks like a camera and 3 crew members reflected in the back window. (00:08:20)
Visible crew/equipment: When Manny gets done with the dentist Jay convinces him to go to the movies, and as they leave the office we can see the reflection of the boom pole/mic on the receptionist's glass window, at the top, left side of the screen. (00:01:40)
Visible crew/equipment: When Manny brings out an epee, equipment and a bald headed crew member are reflected on the polished guard's surface. It's pretty quick, but it's there. (00:09:45)
Visible crew/equipment: After Cam's really long drum moment, when it cuts to Gloria, Jay, and Manny entering their house, the reflections of the moving boom pole/mic and a crew member are visible on the window. (00:15:50)
Visible crew/equipment: When Manny holds up the Phantom mask to Jay's face and realises it's for the wrong side, as Manny rushes back upstairs for a lefty, the reflections of the Steadicam operator and crew are visible on the minivan's surface, beside Gloria. (00:14:40)
Visible crew/equipment: After Gloria and Andy's scene at the park, when it cuts to Pepper presenting his unique wedding ideas, in the first two shots facing Mitch and Cam, the yellow T-mark taped to the floor is visible at the bottom, left corner of the screen. (00:03:35)
Answer: He has seen himself dancing, and is mortified at how bad he looks.