Perchance to dream.
Sleep (n) - Something insomniacs seldom experience. An Old English word dating back to the dawn on the language.
Insomnia (n) - The inability to sleep. From the Latin in- (not) and somnus (sleep). Entered the English Language in the early 17th century.
Sleepytime Gorilla Museum - An experimental rock group and the first Google hit when searching the word sleepytime. Suck on that Sleepytime Herbal Tea.