Searching for 'home shopping' on Youtube returns some unsurprising and hilarious results. The videos below are as painful to watch as they are funny.

The horse moth
Lesson learned: Don't take LSD before you step in front of the camera.

The Ladder
Lesson learned: Know your product. Rehearsals exist for a reason.

The Ladder Revisited
Lesson learned: It pays to watch where you're stepping when back-tracking down a half regulation width ladder.

The Katana
Lesson learned: Demonstrating the durability of a cheap knock-off katana is asking for a world of pain.

Dell is good for pr0n
Lesson learned: Be wary of guys named Randy who call the show to talk about what they use their computer for. Screen your calls.

Serious sh*t TV
Lesson learned: You havn't watched BTTF nearly enough to have easily seen this coming.

The battery
Lesson learned: They don't mark batteries with positive and a negative symbols for the fun of it. Although this was fun to watch.

F-off
Lesson learned: The red light on top of the camera pointing at you means you are being broadcast live. Don't do something you might regret.