I read a little blurb in the July issue of Entrepreneur Magazine called Temper, Temper!
Apparently a Rice University research team has discovered moody office mates contribute to overall creativity and innovation.
"When people are in good moods all the time, it can lead to complacency," says Jennifer M. George, professor of management and psychology at Rice University and co-author of the study. "A negative mood can give you that push to put forth more effort."The article offers some tips for managers of less than sunny employees.