brian setzer
"The man that hath no music in himself, nor is not moved with concord of sweet sounds, is fit for treasons, stratagems, and spoils. The motions of his spirit are dull as night, and his affections dark as Erebus. Let no such man be trusted."
Wanda Jackson is awesome.
“Just to sum up: I would do various things very quickly.” - Donald Trump
Justin TOwnes Earle (has some rockabilly stuff, but is also on the folk/country side as well)

Webb Wilder (an acquired taste, but I love the man!)
how has no one mentioned the always great Reverend Horton Heat? Great stuff. If you are looking for more classic rockabilly songs, then dont listen to his earlier stuff like psychobilly freakout. He has loads of great rocabilly songs though.
Many many many great Rockabilly bands!

The Razorbacks
Reckless Ones
The Chop Tops
Three Bad Jacks
The Luster Kings
Sucker Punch
Royal Crowns
Psycho Devilles
Kim Lenz
The Matadors

Old School:

Eddie Cochran
Duane Eddy
Chuck Berry
Buddy Holly
Johnny Cash
Elvis (Yeah, the King.)
Stray Cats
Blue Cats
The Cramps
Guana Bats

There are so many more it's ridiculous! Rockabilly RULES!
Petey D

Ankle Burner & World Class Sauce Jockey

Sparrow Big Daddy Ace

Sparrow Ratrod Boss

Johnson JT50 Mirage