Nerd Channel

An all-inclusive noun describing any one of a variety of television channels whose genre(s) are typically geared toward intellectual stimulation. Programming on these stations is aimed at the post-adolescent through adult viewer demographic. Shows consist of a variety of topics along a wide range that includes:
how-to shows (gourmet cooking, auto/home repair)
documentaries (history, science, nature, conspiracy)
investigative reporting (crime, psychology, alien abduction)
extreme science (surgery, cryptozoology)

Primary nerd channels include:
History Channel
Discovery Channel
NATGEO
NASA-TV
MiND Television
most PBS affiliates
and some local-access channels