In the movie saga "Back to the future" the DeLorean time machine needs to travel at 88 mph and the flux capacitor needs 1.21 gigawatts of power in order to activate the time circuits.
There's still no Easter Egg on Google though - the search results for Back to the Future are there because they refer to those numbers.
I wouldn't call it an easter egg persay, I just find it funny it actually calculates it