
...than cool clear
Rocky Mountain spring water.
The Big Bang Theory Season 4, Episode 3

Rocky and Bullwinkle.
The Big Bang Theory Season 5, Episode 23

Think about it, Raj.
Where did the movie Rocky take place?
The Big Bang Theory Season 4, Episode 3

Where are the Rocky Mountains?
The Big Bang Theory Season 4, Episode 3

Why Rocky IV?
The Big Bang Theory Season 12, Episode 10