Contrary to the stereotype, rationality doesn’t mean denying emotion. When emotion is appropriate to the reality of the situation, it should be embraced; only when emotion isn’t appropriate should it be suppressed.
The Straw Vulcan, a talk introducing rationality, by Julia Galef (summary) [TODO: this video has been removed, find a good replacement]
Vulcan Logic by Hal Finney
Alief
Truth, Rationality
Litany of Tarski
Hollywood rationality