In it, the Teletubbies repeatedly try to take a nap, only to discover that one Tubby is outside, playing. The errant Tubby comes back in, and all the Tubbies have to be sung to sleep all over again. This is repeated 4 times (once for each Tubby.) I'd recommend it, with the repetition being the only irritating part.

My 18-month-old boy loves this book, and asks to read it frequently. It's already pretty ragged from being read so much, even though we've only had it a few months.