Update 1 (August 16 6:57pm): Google is currently up from the East Coast, as far as I can tell.
Update 2 (August 16 7:01pm): Google appears to be back up for most people. Check out below for some funny tweets about the outage.
Remember that two minutes when Google was down?
— Ed Bott (@edbott) August 16, 2013
We’re canceling the apocalypse. As soon as http://t.co/ct7qzncVWU comes back.
— Dan Benjamin (@danbenjamin) August 16, 2013
Google went down because it was told it could no longer have 20% time and didn't like it
— Danny Sullivan (@dannysullivan) August 16, 2013
Update 3 (August 16 7:19pm): Google appears to be up in the NYC area
Update 4 (August 16 7:56pm): YouTube is online
Update 5 (August 16 8:09pm): Google has updated its App Status page with virtually the same report for each of its products. See below for a screenshot.