Chris Evans Scares Scarlett Johansson on 'Ellen'

The two appear together in the upcoming 'Avengers: Age of Ultron.'

Chris Evans nearly gave Scarlett Johansson a heart attack on Ellen Thursday.

Evans, set up to perfection by prankmaster Ellen DeGeneres, sneaks up behind Johansson as she, ironically, describes how well she's gotten to know Evans over the last decade.

Johansson says she's appeared with Evans in a total of five films and began acting with him when she was about 17.

The two appear together again in the upcoming Avengers: Age of Ultron.

Johansson later got her payback during a riveting game of Avengers? I Hardly Know Her.