Cooking Skill glitch
Note: A TV with a cooking channel and a video game system are required. First, have one Sim sit down and watch TV. Switch the TV over to the cooking channel so that the Sim can start earning its skill point. Then, have a second Sim go over and play video games. You should now notice that although the TV is displaying video games, the first Sim still has the skill meter above its head! Just allow this Sim to sit there until it decides to go do another activity on its own. After that, the skill meter should stay above its head until you start another cooking skill activity. As an added bonus, you can train two skill points at once! i.e., Go work out and both the athletic and cooking skills will continue to rise. This also works with the Fishing Skill and the Gardening Skill, provided you have a TV with those capabilities.