Past and Present April Fool’s technology pranks:

This year’s Google joke:
Google Nose Beta
YouTube shuts down

Past jokes From Google:
Google 8-bit Maps
Chrome Multitask Mode
Google NASCAR Racing
Google self-driving cars in NASCAR
Gmail Tap
Google Street Roo
The YouTube Collection
Go Ro
Google Fiber (bar)
Google Voice for Pets
Jargon-Bot
Interplanetary Reporting on Google Analytics
Google’s Canine Hiring Process

Past pranks from other places:
Warby Barker – Glasses for Dogs
Redfin 2-click House Purchase
ThinkGeek Examples:

~ Jody Victor