I don't know if this has been talked about before, but take a look at the description for Google Gears in firefox, here's a picture:
http://img110.imageshack.us/img110/5495/tubesif2.png
It says "these are the gears that power the tubes". I thought it was pretty funny. It's nice that Google has a sense of humor like that.

Yeah, I just noticed that yesterday. Found this while checking to see whether this had been reported.

Google Gears: "These are the gears that power the tubes!" ... ROFL! :D