knock (someone) off (their) feet

to cause someone great pleasure or surprise.

Here's a film that knocks you off your feet with its first images.

He was knocked off his feet when he heard those rumors.

Related vocabulary: blow your mind

• get the feel of
• get the feel of something
• get the flak
• get the goods on
• get the goods on someone
• get the green light
• get the hang of
• get the hang of something
• get the hell out
• get the hell out of
• get the hell out of somewhere
• get the hump
• get the jitters
• get the jump on
• get the jump on someone
• get the jump on something
• get the measure of
• get the measure of someone
• get the measure of something
• get the message
• get the munchies
• get the nod
• get the picture
• get the push
• get the runaround