Curse you, Blamken! That Muppet Wiki is a candyland to us pop-info junkies. Would you mind not linking to such good $#!%?
PS: Nice little story about Ishmael.
WRT Ishmael, when I worked in day-care a trick I used was to tell the 5 and 6-year-olds "you don't have to go to sleep, but the little kids do, so I just want you to lay on your cot and keep quiet for them." This worked because there were 3 and 4-year-olds in the room, of course, but some variant might work for one kid in their own bedroom.
That's more likely to work on Ishmael's older sisters, who at almost 7 and 5 are now older than the kids I used to work with at summer camp. Yikes! Anyway, I do appreciate the thought, but honestly he'd just turned 2 and doesn't really grasp such reasoning yet, especially when he's overtired.