Just to do something a little different, and because I'm on a Babylon 5 kick at the moment, here is one of my many favorite episodes in which Dr. Franklin gives the rest of the Command staff new diets. Food plans. Whatever. Garibaldi is told to cut back on the fats and salt, Sheridan has to cut back on meats and add more veggies, and Ivanova has to add fats and minerals. As you can guess, none of them are very happy about it. Though it's nearly cut off in the transition between excepts, listen for Franklin's final comment to Ivanova's exasperated metaphor.
Though Babylon 5 has many serious moments and episodes that focus more heavily on the conflict, there are the more ordinary (and humorous) moments like this scattered throughout the five seasons. I love these characters.