At the start of the trailer, Djimon Hounsou's character (Korath the Pursuer) approaches Chris Pratt's Peter Quill (a.k.a. Starlord) trying to take an cosmic looking jewel, Indiana Jones style. "Who are you?" he asks. "Starlord."

"Who?" Korath asks, mirroring the thoughts of most people watching the trailer. The Guardians aren't the Avengers; there's no Captain America, Hulk or Iron Man in this collective. "Starlord, man, the legendary outlaw?" Quill asks hopefully.

After that, John C. Reilly's Rhomann Dey is conducting a police lineup where we meet the rest of the team, including Rocket Raccoon (voiced by Bradley Cooper) and Groot, a walking, talking tree (voiced by Vin Diesel).

But 1:40 into the trailer, when a security guard dons Quill's old-school Sony Walkman (complete with orange foam headphones - an artifact of the '80s, not the '70s) we hear what the protagonist was listening to: the Blue Swede hit "Hooked on a Feeling," a No. 1 hit on the U.S. singles charts in 1974.

The film's second trailer only waits about 30 seconds to go back to the '70s. This time, they use Norman Greenbaum's #3 hit from 1970 (although it was released in 1969), "Spirit in the Sky." But when Groot messes with the very '70s looking cassette deck (containing a tape labeled "Awesome Mix Vol. 1), the song changes back to, again, "Hooked on a Feeling."