In the episode "Who Do You Trust," during the make-out session between Lucy and Lance Bass from *NSYNC, notice how they repeat the same action over and over. Meaning, he puts his hand on her cheek and moves down her arm. Then we cut to Eric looking at them. One second later, you see him put his hand on her cheek again and move down her arm again. We see Eric again, and the two repeat the motion one more time. It looks like instead of taking the best take of the kissing scene, they just spliced all the takes together!