Favorite guitar riff

A couple of acoustics:
Robert Fripp on Solsbury Hill
Tracy Chapman on Fast Car

 

--Rockin' in the Free World, Neil Young
--All Night Long, Rainbow
--I Need a Lover, John Cougar
--Feels Like the First Time, Foreigner
--Wrap It Up, Fabulous Thunderbirds

 

Tough to top the 1-2 punch of "Satisfaction" and "Day Tripper," but here's a few more:

"Lucifer Sam" -- Pink Floyd. My favorite Syd song, and riff.
"No Like You" -- The Scorpions (actually the song opens with a solo, but whatever ... still kicks ass)
"Do Ya" -- The Move/ELO.
"Open My Eyes" -- Nazz

and a shout-out to my favorite 1990s Brit rockers:
"Sun Hits the Sky" -- Supergrass
link:

(ignore the goofy three-wheeled car in the video )

 

The end of Decoation Day, DBT. (Isbell, to be more specific.)

 

--Monkey Gone to Heaven, Pixies
--Back in Black, AC/DC
--Cult of Personality, Living Colour
--Rock 'n' Roll Band, Boston
--Slow Ride, Foghat

 

Go for a Soda - Kim Mitchell
Roller - April Wine
The Ocean - Led Zeppelin
Hot Rod Lincoln - Commander Cody And His Lost Planet Airmen

 

Godzilla - Blue Oyster Cult

 

Mott the Hoople - Roll Away The Stone
Queen - Tie Your Mother Down, Keep Yourself Alive
UFO - Lights Out
Fastway - Say What You Will
Cheap Trick - California Man, Clock Strikes Ten

Harder Edged:
Pantera - Cemetary Gates, Walk
Loudness - Crazy Nights
Iron Maiden - Two Minutes to Midnight, Run to the Hills, Aces High (bass riff)

 

"Can't Hardly Wait" - Replacements

"Twilight Zone" - Golden Earring

"Ace of Spades" - Motorhead