Now you know why we have that expression.
From Wikipedia… (Do I really need to link that?) No.
- Tony Blair – played in “Mars Hotel“-inspired student band
- Joseph Campbell – proclaimed deadheads as “the world’s newest tribe.”
- Pete Carroll
- Bill Clinton
- Owen Chamberlain – claimed the Rhythm Devils gave him “interesting ideas”
- Ann Coulter
- Al and Tipper Gore
- Keith Haring
- Phil Jackson
- Patrick Leahy
- Mike Lookinland, Actor – Bobby Brady
- Carl and Larry Page
- Bill Walton (also sourced here) – known as “Grateful Red”, frequently included Dead references in interviews
- Al Franken
- Nancy Pelosi CBS News (2006).
- Jerry Greenfield
- Henry Rollins and Greg Ginn of Black Flag.
In a BAM (magazine) review of a Grateful Dead concert in Irvine, California, on April 13, 1985, the writer wrote: “So-called adventuresome people who dig Black Flag probabably wouldn’t be caught alive at a Grateful Dead show“. This had Greg Ginn write a letter to BAM Magazine, explaining that he and other people of the Black Flag had attended the concert being reviewed, and that he himself had been to many Dead shows in the past, and that the Grateful Dead was his favourite band.
Source: The Grateful Dead fanzine, The Golden Road, in the Winter 1986 issue. Publisher for the fanzine was well-known journalist Blair Jackson.
- Tucker Carlson
- William Weld– Former Governor of MA.
- Alex Allan– Head of the (British) Joint Intelligence Committee (JIC)
- Frank Marino– Canadian rock guitarist who in numerous interviews talks about his interest in classic San Francisco rock 
- David Boreanaz– Actor, famous from the TV series “Buffy the Vampire Slayer“, “Angel” and “Bones“. See trivia on imdb for the reference to Grateful Dead. 
Lila Downs – mexican/american singer, who dropped out of university in the late 1980’s and lived about two years on the road following Grateful Dead tours.