I could have guessed that a group of sexbots is called a harem, but I never would have known that a group of molemen is called a bureau. Thanks to this handy chart, I'll never embarrass myself like that again.
A group of turtles is called a “bale.” Please view the video for a rather absurd demonstration of a bale of turtles.
http://kottke.org/10/06/collective-nouns-illustrated
Here are the winners from a contest asking artists to illustrate collective nouns, such as “a round of robins.” Then there's also “New Collective Nouns for Social Groups” illustrated, which might actually directly apply to your life.