Actually, I’d venture that the most distinctive opening note ever is not a guitar note at all, but the opening organ note of “A Whiter Shade of Pale.” The snare drum thwack at the beginning of “Like a Rolling Stone” is up there, too.
Oh, definitely something from Queens of the Stone Age… I like the riff behind the chorus of “Do It Again”, it’s doubled by the bass and it sounds like 90 feet tall. I love that.
“Reelin’ In The Years.” (Steely Dan)
“The Boys Are Back In Town.” (Thin Lizzy)
Oh, and Robin Trower!!! “Bridge of Sighs” or I really like “Little Bit of Sympathy.”
“And Your Bird Can Sing.” (Beatles) “Hey Bulldog.” “Helter Skelter.”
Surely the White Stripes have done something on the List, too.
My all-time absolutely favorite ever: “Shake Some Action.” (Flamin’ Groovies)
p.s. Lenny Kravitz, seconded.