Chicago Hope - S5-E9
Visible crew/equipment: At the beginning episode 5.9, "Chicago Hope", the camera and several studio lights reflect on the glass door behind Tim as he sits at the dining room table.

Visible crew/equipment: At the very end of the episode, the top of the set and crew lights are visible on the top on the screen.
Visible crew/equipment: As Jill is describing how, when she stops at an intersection, the "car guys" revv their engines, a crew member can be seen reflected in the window behind her, moving across the stage from left to right.
The Route Of All Evil - S4-E13
Visible crew/equipment: At the end of the episode Brad and Tim are having a conversation at the dinner table and a camera crew member is reflected in the kitchen window.
Brother, Can You Spare A Hot Rod? - S4-E14
Visible crew/equipment: When they're working on the blue car, you can see the reflection of the boom mike in the top and bottom chrome of the windshield. The boom mike itself can also be seen at certain points.
Adventures In Fine Dining - S1-E6
Visible crew/equipment: After Randy says 'Now you did' when at the table, the camera cuts to Tim putting his hand on his forehead and you can see a reflection of someone walking in the fireplace.
Groin Pulls - S2-E4
Visible crew/equipment: Towards the end when Tim is testing out of the pulley system talking to Jill, when Jill says "I'm sorry for putting ice down your pants," you can briefly see someone in a blue shirt near Tim's left leg.
The Wood, The Bad And The Hungry - S6-E10
Visible crew/equipment: At the end when Tim is about to open the door to walk back inside after talking to Benny, you can see a shadow of a boom mic on the left corner of the house just left of the door.
I Was A Teenage Taylor - S6-E7
Visible crew/equipment: Towards the end when Brad and Randy are talking to Larry about being shorted money, right when Brad says 'We will go get it,' you can see the shadow of a boom mic on the wall behind Larry.

I Was A Teenage Taylor - S6-E7
Visible crew/equipment: When Tim is looking at the fake severed head in the microwave, the camera that is mounted inside the microwave is visible before it switches to that camera's point of view.
Visible crew/equipment: While Jill is looking at the TV you can see someone's head behind the entertainment stand. (00:03:15)
Swing Time - S3-E22
Visible crew/equipment: When Tim is telling the boys what Jill wants for Mother's day, the shadow of the boom mic is visible on the house behind him.
Visible crew/equipment: When Wilson is trying to get a cat out of a tree, a boom mic is visible.
'Twas the Blight Before Christmas - S3-E12
Visible crew/equipment: When the camera pans over the decorated roof you can see part of the studio.
Visible crew/equipment: When Al brings Brad and Ashley downstairs the top of the set can be seen.
Visible crew/equipment: Just before Tim walks into the garage when Jill is trying to fix the stove a boom mic is visible.
Visible crew/equipment: When Tim chases Jill through the backyard, a boom mic is visible.
Groin Pulls - S2-E4
Visible crew/equipment: When Tim flies up to the upstairs window, a crew member's hand can be seen. (00:20:35)
Groin Pulls - S2-E4
Visible crew/equipment: When Wilson walks over to talk to Tim, the top of the house set can be seen.
Visible crew/equipment: The boom mic is reflected in the glass of the door when Jill starts to watch Tool Time. (00:03:10)
Answer: Tim's other brothers are named Rick and Steve. They never appeared on the show, and were only mentioned in passing.
Cubs Fan