Lieutenant Uhura (Nichelle Nichols) and Captain Kirk (William Shatner) share TV's first interracial kiss (Photo: CBS Photo Archive/Getty)
In tonight's interview with activist and author Dan Savage, Dan tells George about the difficult relationship he had with his father growing up.
"He was always uncomfortable with me because I was gay," he says. "It created this rift we couldn't bridge."
Dan then reveals how an episode of the TV series 'Barney Miller' - featuring one of the earliest depictions of a recurring gay character in a prime-time TV series - led him to a deeper understanding of his father.
That TV moment played a key part in Dan's life, but what's revelatory for some is downright scandalous to others. Here are some TV moments that famously pushed the line and ensured the sexual revolution was indeed televised.
1965 - The 'I Dream of Jeannie' Belly Button Decision
Barbara Eden with Larry Hagman, her 'I Dream of Jeannie' co-star (Photo: Getty)
Barbara Eden's belly button is banned from 'I Dream of Jeannie', never to appear again until a 1985 reunion movie.
1968 - The First Interracial Kiss on TV
Nichelle Nichols at a Star Trek convention in 2006 (Photo: Getty)
Star Trek's Captain Kirk (Canadian William Shatner) and Lt. Uhura (Nichelle Nichols) share television's first interracial kiss.
1972 - 'Maude' Brings Abortion Into The Conversation
Bea Arthur as the title character in 'Maude' (Photo: CBS)
'Maude' is the first prime-time series to show a main character, Maude Findlay played by Bea Arthur, deciding to have an abortion.
1975 - Advertising Condoms
Two condoms held up by an anti-Pope protester in Australia in 2008 (Photo: Getty)
A TV station in San Jose, CA, airs the first condom commercial.
1977 - TV's First Regular Gay Character
Billy Crystal in the '80s (Photo: Getty)
Billy Crystal plays Jodie Dallas, TV's first gay regular, on 'Soap'.
1985 - The First TV Movie About AIDS
Aidan Quinn in 1998 (Photo: Reuters)
Aidan Quinn plays an HIV-positive homosexual in 'An Early Frost', TV's first movie about AIDS.
1986 - The Word "Condom" Is Spoken On A TV Show
Sharon Gless (l) and Tyne Daly get stars on the Hollywood Walk of Fame in 1995 (Photo: Reuters)
'Cagney & Lacey', starring Tyne Daly and Sharon Gless, is the first network series to use the word "condom."
1997 - Ellen Becomes The First Lesbian Main Character On Network TV
Ellen DeGeneres in 1997 (Photo: Getty)
'Ellen' is the first network TV series to feature a lesbian main character when Ellen Morgan (Ellen DeGeneres) announces "I'm gay."
1998 - The First Romantic Kiss Between Men
Kerr Smith, who played Jack on 'Dawson's Creek'. The character kissed Ethan in Season 3 of the show (Photo: Getty)
'Dawson's Creek' makes history with the first romantic kiss between two men on prime-time TV.
Catch the full interview with Dan Savage at 7pm on CBC Television, and check out Dan's latest book. It's called 'American Savage: Straight Talk on Faith, Sex, Love and Politics'..